An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... The hundred year history of East Malling Research Station (EMRS) is reviewed from a personal perspective: In March 1913, Kent fruit farmers in the Southeast of England founded the Wye College Fruit Experimental Station. In 1920, the newly formed ‘Kent Incorporated Society for the Promotion of Experiments in Horticulture’ took over East Malling (as a site independent from Wye College) „with offices ...
Aspergillus flavus; Zea; aflatoxins; breeding; corn; disease resistance; ear rot; heritability; literature; plant pathogens; poultry; public sector; surveys; England; Southeastern United States
Abstract:
... Aflatoxin is a potent toxin produced by Aspergillus flavus Link:Fr, an opportunistic ear-rot pathogen of maize (Zea mays L. subsp. Mays). Prior to the discovery of aflatoxin, A. flavus was considered a minor pathogen and was not a priority for maize breeders or pathologists. Aflatoxin was discovered in England in 1961 following an epidemic in poultry. By the early 1970s, surveys of agricultural co ...
Somateria mollissima; adults; age structure; breeding; capital; death; eggs; females; food availability; helminths; immunity; mortality; risk; viruses; England
Abstract:
... In a study of adult Common Eider (Somateria mollissima) females in northeastern England, the annual mortality rate increased by 1 percentage point every 4 years and doubled over the study period (1962–1995). All age classes of adult females experienced years of low mortality, but in years when the overall mortality was high, the oldest age groups suffered three times the mortality rate incurred by ...
... Agricultural intensification is a key cause of the population declines shown by many farmland bird species across Europe. Changes in land management through agri-environment schemes (AES) are frequently cited as the best tool to reverse these trends, to date however they have received mixed support. This study tested whether AES options in England that provide winter seed food or insect-rich forag ...
Brassica napus; Common Agricultural Policy; agricultural land; breeding; breeds; case studies; climate change; coppicing; cropping systems; development policy; energy crops; energy policy; environmental impact; expert opinion; farms; geographic information systems; habitats; land use change; population density; statistical models; surveys; wheat; England
Abstract:
... The development of forward scenarios is a useful method of envisaging the environmental implications of potential changes in land use, as a tool for policy development. In this paper, a spatially explicit case study is used to provide insight into the environmental impacts of Common Agricultural Policy reform on Skylark Alauda arvensis, a species which is widespread on arable farmland, breeds in c ...
... Around 11% of arable land in England was set-aside in the mid-1990s as part of the Common Agricultural Policy (CAP). The scheme allowed both annual and longer-term exclusion from cropping. The most widespread green cover was natural regeneration, followed by non-food crops and sown grass covers. Impacts of set-aside management on agronomy and ecology were investigated using a questionnaire for far ...
correlation; canopy; lidar; wood; Parus major; North Atlantic Oscillation; breeding; models; habitats; spring; woodlands; chicks; climate; cold; England
Abstract:
...
Habitat quality is fundamental in ecology, but is difficult to quantify. Vegetation structure is a key characteristic of avian habitat, and can play a significant role in influencing habitat quality. Airborne lidar provides a means of measuring vegetation structure, supplying accurate data at high post-spacing and on a landscape-scale, which is impossible to achieve with field-based methods. ...
... Capsule Repeated counts of fledged broods can provide a useful estimate of breeding success for most common woodland birds.Aims To assess the efficacy of comparing fledged-brood survey data with territory mapping using simple mark–recapture analysis techniques to provide an estimate of breeding success for common woodland birds that does not involve finding nests.Methods Three observers undertook ...
agricultural land; biodiversity; birds; breeding; climate change; ecosystems; environmental degradation; habitats; homogenization; models; space and time; England
Abstract:
... Partitioning biodiversity change spatially and temporally is required for effective management, both to determine whether action is required and whether it should be applied at a regional level or targeted more locally. As biodiversity is a multifaceted concept, comparative analyses of different indices, focussing on different components of biodiversity change (evenness vs. abundance), give better ...
agricultural land; air; birds of prey; breeding; ecosystems; habitats; humans; insectivores; invertebrates; land use change; lichens; manufacturing; nests; population dynamics; rivers; urban areas; water birds; water pollution; water quality; woodlands; England
Abstract:
... The predominantly urban boroughs of Warrington and Halton straddle the river Mersey in northwest England. Since the 1970s there has been a major change in land-use associated with both innovative town design and the decline of manufacturing and chemical industries in the boroughs. Also, co-ordinated programmes have directly addressed air and water pollution. The breeding birds of the two boroughs ...
topography; habitat preferences; snakes; plant communities; breeding; pregnancy; Vipera; mortality; population density; ecological competition; small mammals; females; England
Abstract:
... The general characteristics of the colubrid snake Coronella austriaca are described from observations made on populations examined in England. An account of the population ecology, breeding ecology, habitat preferences and general behaviour of this species is based on records collected at three study sites over a period of three years. Level of recruitment to the populations is probably low becaus ...
birds; breeding; ecosystems; farming systems; fens; food production; glaciation; habitats; humans; landscapes; population size; wildlife management; England; Western European region
Abstract:
... Empirical evidence from many regions suggests that most species would be least negatively affected if human food demand were met through high‐yield agricultural production and conservation of nonfarm ecosystems (land sparing), rather than through wildlife‐friendly farming over a larger area (land sharing). However, repeated glaciation and a long history of agriculture may lead to different results ...
... The tree canopy characteristics of two broadleaved woods in southern England were quantified in terms of two independent measures of structure, canopy height (calculated using heights ≥ 1 m) and percentage canopy cover (derived using heights < 1 m), using airborne Light Detection and Ranging. The woods differed strikingly in structure due to their management systems; one was predominantly mature o ...
... Capsule Female Black Grouse demonstrated fidelity to breeding areas, selecting nest-sites in taller, more dense vegetation, with nest success related to concealment. Aim To investigate the fidelity to breeding areas and nesting habitat preferences of female Black Grouse. Methods Nest habitat data were collected from radio-tagged females and related to measures from random sites and in relation to ...
Falco; birds of prey; breeding; climate; confidence interval; land use change; surveys; England; Northern Ireland; Scotland; Wales
Abstract:
... Capsule The third national Merlin survey estimated a UK population of 1162 breeding pairs (95% CI: 891–1462).Aims To estimate the number of breeding Merlins (with associated 95% confidence intervals) in the UK and the four countries (Scotland, England, Wales and Northern Ireland), and to compare these with the relevant estimates from the 1993–94 Merlin survey. In addition, to calculate estimates o ...
... The UK population of the Spotted Flycatcher Muscicapa striata has declined markedly in the last 30 years but there have been few recent studies of the species. This study examined the relationship between nest success and the predominant habitat type around Spotted Flycatcher nests in two contrasting areas of England. A breeding population in eastern England, a region where numbers of Spotted Flyc ...
Phylloscopus; adults; bird banding; breeding; breeding season; demography; females; gender differences; juveniles; males; migratory birds; population dynamics; sex ratio; surveys; survival rate; England
Abstract:
... Male‐biased sex ratios occur in many bird species, particularly in those with small or declining populations, but the causes of these skews and their consequences for local population demography are rarely known. Within‐species variation in sex ratios can help to identify the demographic and behavioural processes associated with such biases. Small populations may be more likely to have skewed sex ...
... 1. An 8-year-field experiment on moorland in northern England manipulated the abundance of legally controllable predators whilst maintaining consistent habitat conditions. Subsequent changes in both the breeding success and abundance of five ground-nesting bird species were monitored: lapwing Vanellus vanellus, golden plover Pluvialis apricaria, curlew Numenius arquata, red grouse Lagopus lagopus ...
birds; breeding; environmental factors; habitats; heathlands; national parks; surveys; Africa; England; Southern European region
Abstract:
... Capsule: Population changes of many moorland and heathland birds in southwest England show associations with environmental change, and the area supports notable breeding populations of species of conservation concern. Aims: To quantify changes in moorland and heathland breeding bird abundance in relation to changes in environmental variables. Methods: A two-visit moorland bird survey method was us ...
... The aims of this study were to update the prevalence of lameness in sheep in England and identify novel risk factors. A total of 1260 sheep farmers responded to a postal survey. The survey captured detailed information on the period prevalence of lameness from May 2012–April 2013 and the prevalence and farmer naming of lesions attributable to interdigital dermatitis (ID), severe footrot (SFR), con ...
Gallinago; breeding; conservation areas; grasslands; grazing intensity; habitats; hardness; land management; mortality; organic soils; soil water; England
Abstract:
... Snipe Gallinago gallinago breeding on lowland wet grasslands in England have undergone widespread and dramatic declines in abundance and distribution since at least the 1970s. There are many potential drivers of the decline but reductions in habitat quality, driven by land management, are often proposed as a contributing factor in the historical declines of breeding waders. Breeding snipe are now ...
Meles meles; Mycobacterium bovis; badgers; bovine tuberculosis; breeding; breeds; disease transmission; genotype; loci; microsatellite repeats; parentage; probability; social structure; England
Abstract:
... The European badger (Meles meles) breeds plurally in lowland England and is important economically due to its link with bovine tuberculosis (Mycobacterium bovis) transmission. To understand disease transmission and facilitate effective management, it is vital to elucidate the social structure of badger groups. To improve parentage assignment and the discrimination of relatives, we isolated and cha ...
... Populations of Afro‐Palearctic migrant birds have shown severe declines in recent decades. To identify the causes of these declines, accurate measures of both demographic rates (seasonal productivity, apparent survival, immigration) and environmental parameters will allow conservation and research actions to be targeted effectively. We used detailed observations of marked breeding birds from a ‘st ...
Cecily E. D. Goodwin; Andrew J. Suggitt; Jonathan Bennie; Matthew J. Silk; James P. Duffy; Nida Al‐Fulaij; Sallie Bailey; David J. Hodgson; Robbie A. McDonald
Muscardinus avellanarius; Rubus plicatus; active sites; birds; breeding; butterflies; climate; conservation status; coppicing; habitat connectivity; landscapes; monitoring; species diversity; summer; winter; woodlands; England
Abstract:
... Although strictly protected, populations of the hazel dormouse Muscardinus avellanarius in the UK declined by 72% from 1993 to 2014. Using National Dormouse Monitoring Programme data from 300 sites throughout England and Wales, we investigated variation in hazel dormouse population status (expressed as Indices of Abundance, Breeding, and population Trend) in relation to climate, landscape, habitat ...
Cygnus olor; alleles; allozymes; breeding; humans; lactate dehydrogenase; monogamy; nesting; nesting sites; nests; swans; water birds; Denmark; England
Abstract:
... The Mute swan (Cygnus olor Gmelin (Anatidae)) is a common water bird of lowland freshwaters and coastal shallows. Its typical breeding system involves lifelong monogamous pairs which vigorously defend large breeding territories, sometimes killing intruding swans that are unable to escape. However, in some unusual circumstances (superabundant food coupled with limited nesting sites) Mute swans may ...
Podarcis muralis; breeding; climate; colonizing ability; females; gender differences; introduced species; life history; males; sexual behavior; wall lizards; England; Southern European region
Abstract:
... Non‐native animals can encounter very different environments than those they are adapted to. Functional changes in morphology, physiology and life‐history following introduction show that organisms can adapt both fast and efficiently. It remains unclear, however, if female reproductive characters and male sexually selected behaviour show the same adaptive potential. Furthermore, the invasion succe ...
breeding; ecosystems; habitats; interspecific variation; wild birds; England
Abstract:
... Ecological indicators are increasingly being used to monitor the state of the environment. Ideally indicators should quantify and summarise ecosystem function and overall health. However, there is a lack of consensus on the correct approach for the production of these indicators which is crucial to their success in achieving this overall aim. The selection of species and data to include in each in ...
breeding; guidelines; national surveys; grazing intensity; salt marshes; nesting; population size; Tringa totanus; habitats; England
Abstract:
... Capsule: Over 50% of saltmarsh breeding Common Redshank have been lost since 1985, with current conservation management having only limited success at halting these declines.Aims: To update population size and trend estimates for saltmarsh-breeding Redshank in Britain, and to determine whether conservation management implemented since 1996 has been successful in influencing grazing intensity and R ...
Mycosphaerella graminicola; breeding; breeding lines; cultivars; disease resistance; field experimentation; genes; heading; leaf blotch; leaves; wheat; England
Abstract:
... The contributions of disease escape and disease resistance to the responses of wheat to septoria tritici leaf blotch (STB) were analysed in a set of 226 lines, including modern cultivars, breeding lines and their progenitors dating back to the origin of scientific wheat breeding. Field trials were located in the important wheat-growing region of eastern England and were subject to natural infectio ...
... Decrease of grey partridge population is a global process that has been catastrophic in recent decades. In England, the number of this species declined by 80% in the period from the beginning of the fifties to the mid-eighties of the last century (Potts, 1986). In the Czech Republic from 1965 to the end of the eighties by as much as 95% (Štasny et al. 1997), and the situation is similar in Poland ...
... 1. Studies examining changes in the scheduling of breeding in response to climate change have focused on species with well‐defined breeding seasons. Species exhibiting year‐round breeding have received little attention and the magnitudes of any responses are unknown. 2. We investigated phenological data for an enclosed feral population of cattle (Bos taurus L.) in northern England exhibiting year‐ ...
Falco; breeding; breeding sites; habitats; nesting; England
Abstract:
... Capsule Breeding Hobbies are more numerous in parts of southeast England than previously recognized, and in suitable habitat their breeding dispersion shows a regular pattern.Aims To establish the density and breeding dispersion pattern of a population of Hobbies in southeast England.Methods Surveys to locate every pair of Hobbies present were conducted in six study areas of between 48.0 and 201.2 ...
Reid Scott M.; Banks Jill; Ceeraz Vanessa; Seekings Amanda; Howard Wendy A.; Puranik Anita; Collins Susan; Manvell Ruth; Irvine Richard M.; Brown Ian H.
Anas platyrhynchos; Influenza A virus; air; anorexia; antibiotics; avian influenza; breeding; control methods; disease control; eggs; farms; flocks; genes; hemagglutination; hemagglutinins; hens; intravenous injection; males; morbidity; mortality; nucleotide sequences; nucleotides; occupational health and safety; pathogenicity; pathotypes; public health; rearing; reverse transcriptase polymerase chain reaction; risk; sequence analysis; sialidase; sinusitis; specific pathogen-free animals; turkey hens; viruses; East Asia; England
Abstract:
... In April 2013, an H9N2 low pathogenicity avian influenza (LPAI) virus was isolated in a turkey breeder farm in Eastern England comprising 4966 birds. Point-of-lay turkey breeding birds had been moved from a rearing site and within 5 days had shown rapid onset of clinical signs of dullness, coughing, and anorexia. Three houses were involved, two contained a total of 4727 turkey hens, and the third ...
bitches; breeding; cats; heart rate; medicine; neonates; ovulation; parturition; pets; prediction; pregnancy; radiography; radiology; small animal practice; surgery; ultrasonography; England
Abstract:
... Accurate prediction of delivery date in canine and feline allows a better management of parturition, reducing the loss of neonates. This review evaluates the most common methods adopted to accurately predict the day of delivery: determination of ovulation and hormonal assays, first appearance of embryonic/foetal structures using ultrasound or radiography, echographic measurement of extra‐foetal an ...
abscess; body condition; breeding; business enterprises; confidence interval; ewes; farmers; flocks; footrot; geometry; granuloma; lameness; locomotion; models; relative risk; sheep industry; vaccination; England
Abstract:
... Lameness in sheep has economic and welfare implications, including loss of ewe body condition, lower lambing percentages, and poor lamb growth rates. It costs the UK sheep industry around £80 million per year. The majority of lameness is caused by the infectious diseases footrot and contagious ovine digital dermatitis, with white line separation, white line abscesses, and toe granulomas also repor ...
... Captive breeding and release of the ring‐necked pheasant Phasianus colchicus became very intensive in Hungary in the 1960s. In the peak year of 1977 over one million birds were harvested which was a 4‐fold increase compared to the late 1960s. In the late 1970s about one million birds were released annually. In the 1980s the number of harvested pheasants started to decrease in spite of the fact tha ...
Lyrurus tetrix; Mustela erminea; adults; autumn; birds of prey; breeding; death; grouse; habitat fragmentation; hens; philopatry; poults; predation; radio transmitters; reproductive success; roosters; spring; survival rate; winter; England
Abstract:
... Between autumn 1998 and spring 2000, 70 black grouse Tetrao tetrix (48 poults and 22 adults) were equipped with radio transmitters in the North Pennines, England. We recorded timing and distances of dispersal, survival rates and causes of death. First‐year survival rates differed between years, but in each year were highest in late autumn prior to dispersal, when predation by stoats Mustela ermine ...
Falco; Sternula; birds of prey; breeding; chicks; data collection; falcons; monitoring; motivation; nests; population growth; predation; predator control; predator-prey relationships; seabirds; England
Abstract:
... Predation can limit bird populations, especially in ground-nesting and colonial species. Solutions are usually available to reduce the impacts of predation if the predator is non-native or not legally protected (e.g. predator control or exclusion). However, when the predator is protected by law (e.g. raptors) potential solutions are limited. If predator and prey are both species of conservation co ...
Passeriformes; breeding; foraging; habitats; nesting; rivers; salt marshes; species abundance; surveys; water birds; England
Abstract:
... Capsule: Bridge construction works over a major river did not adversely impact the overall wintering and breeding bird assemblage, although contrasting species-specific trends in breeding number were noted. Aims: To determine whether the wintering water-bird and breeding bird assemblage using the River Mersey, in northwest England, was influenced by bridge construction works. Methods: Common bird ...
... Food availability influences multiple stages of the breeding cycle of birds, and supplementary feeding has helped in its understanding. Most supplementation studies have reported advancements of laying, whilst others, albeit less numerous, have also demonstrated fitness benefits such as larger clutches, shorter incubation periods, and greater hatching success. Relatively few studies, however, have ...
birds; breeding; breeding season; climate change; community structure; habitats; population growth; spring; summer; temperature; weather; winter; England
Abstract:
... Climate change is reported to have caused widespread changes to species’ populations and ecological communities. Warming has been associated with population declines in long‐distance migrants and habitat specialists, and increases in southerly distributed species. However, the specific climatic drivers behind these changes remain undescribed. We analysed annual fluctuations in the abundance of 59 ...
... Capsule The breeding success of Lesser Spotted Woodpeckers Dendrocopos minor is now lower in England than previously reported and also lower than found in studies elsewhere in Europe.Aims To quantify the breeding success and identify the causes of nest failure. To test the hypotheses that breeding success is related to aspects of food limitation and parental care, and inclement weather during the ...
... Sheep ticks Ixodes ricinus (Acari: Ixodidae) and tick‐borne diseases cause major economic losses in both upland sheep farming and moorland shoots of red grouse Lagopus lagopus scoticus. Sheep were treated with acaricide four times between March and October and double‐vaccinated against louping ill virus (LIV), instead of the conventional regime of two acaricide treatments and no vaccinations, on t ...
... The introduction of exotic species to ecosystems can have severe consequences for populations of native organisms, but logistical limitations and shortage of historical data often hinder attempts to quantify the ecological implications of such relationships. The establishment and rapid expansion of Ring-necked Parakeets Psittacula krameri in England therefore presents a rare opportunity to apply n ...
Cervidae; birds; breeding; browsing; coppicing; deer; environmental impact; fences; habitats; males; radio telemetry; regrowth; understory; vegetation; England
Abstract:
... The ecological impacts of increasing populations of deer (Cervidae) in Europe and North America are becoming more widespread and pronounced. Within Britain, it has been suggested that declines in several woodland bird species, particularly those dependent on dense understorey vegetation, may be at least partly due to these effects. Here we present experimental evidence of the effects of deer brows ...
Tyto alba; breeding; breeding season; brooders; chicks; eggs; fledglings; home range; linear models; nesting; nesting sites; nests; probability; voles; England
Abstract:
... Capsule : Early nesting Barn Owls Tyto alba and those that switched nest sites fledged most chicks overall because they could fit two, more productive, nesting attempts into a breeding season. Aims : To determine the frequency and productivity of double broods in Barn Owls, and for double brooders, to determine what affects the probability of nest switching and how that affects productivity. Metho ...
... Several old cultivars, and breeding clones of European pear Pyrus communis L. originating from Belgium, England, Sweden, and Switzerland were evaluated for their resistance/susceptibility to fire blight. Studies were carried out during three consecutive years 2007â2009 in the greenhouse of Warsaw University of Life Sciences, Poland. Strain 691 of Erwinia amylovora was used for artificial infecti ...
Sylvia atricapilla; birds; breeding; evolution; global change; migratory behavior; models; stopover sites; winter; England; France; Germany; Italy; Northern Africa
Abstract:
... The Blackcap Sylvia atricapilla is a model species for the evolution of bird migration in a time of global change. However, many assumptions about putative changes to their migratory paths have not been verified because, until recently, it has not been possible to track individual small passerines throughout the entire migration cycle. With the recent development of miniaturised light-level geoloc ...
... Capsule For nest construction by Blue Tits, but not Great Tits, first‐egg date (FED) and air temperature significantly affected the mass of the nest as a whole and some of its component parts.Aims To test the hypothesis that use of nest materials is influenced by prevailing climatic conditions during nest construction.Methods Nests used in the study were built by Blue Tits Cyanistes caeruleus and ...
... Capsule Breeding Common Kestrels prefer to forage over recently cut grass than all other habitat types on farmland.Aims To identify foraging habitat and prey of Common Kestrels during the breeding season.Methods We observed seven pairs of Common Kestrels during the breeding season over three years, using fixed vantage point observations. We recorded foraging attempts, and habitat and prey data for ...