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You searched for: Subject term agricultural land Remove constraint Subject term: agricultural land Subject term Circus Remove constraint Subject term: Circus Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Urbanization and cattle density are determinants in the exposure to anticoagulant rodenticides of non-target wildlife

Author:
Jhon J. López-Perea; Pablo R. Camarero; Ines S. Sánchez-Barbudo; Rafael Mateo
Source:
Environmental pollution 2019 v.244 pp. 801-808
ISSN:
0269-7491
Subject:
Bubo bubo; Circus; Martes foina; Meles meles; Milvus milvus; Vulpes vulpes; agricultural land; animal tissues; anticoagulants; bioaccumulation; biocides; birds of prey; cattle; crops; environmental factors; farms; habitats; human population; liver; livestock and meat industry; logit analysis; nontarget organisms; plant protection; population density; risk; rodenticides; toxicity; urban areas; urbanization; wildlife; Spain
Abstract:
... The persistence and toxicity of second generation anticoagulant rodenticides (SGARs) in animal tissues make these compounds dangerous by biomagnification in predatory species. Here we studied the levels of SGARs in non-target species of wildlife and the environmental factors that influence such exposure. Liver samples of terrestrial vertebrates (n = 244) found dead between 2007 and 2016 in the reg ...
DOI:
10.1016/j.envpol.2018.10.101

2. Breeding phenology and nest survival of Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in the agricultural landscapes of north-east Patagonia, Argentina

Author:
Luciano N. Segura; María S. Bó
Source:
Emu 2018 v.118 no.2 pp. 218-223
ISSN:
1448-5540
Subject:
Circus; agricultural land; breeding; grasslands; habitats; nesting; nests; phenology; population dynamics; survival rate; Argentina
Abstract:
... We present novel data on breeding ecology and nest survival of the Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in modified grasslands of southern Argentina and we evaluate variations in daily nest survival rates (DSR) in relation to temporal and habitat variables. We studied three mixed nesting colonies embedded in agricultural landscapes along a road. We found that DSR decre ...
DOI:
10.1080/01584197.2017.1404431

3. Annual and seasonal patterns in wildlife road-kill and their relationship with traffic density

Author:
Richard MFS Sadleir; Wayne L Linklater
Source:
New Zealand journal of zoology 2016 v.43 no.3 pp. 275-291
ISSN:
1175-8821
Subject:
Circus; Erinaceidae; Oryctolagus cuniculus; Trichosurus vulpecula; agricultural land; birds; breeding; habitats; periodicity; pest control; possums; rabbits; road kills; roads; seasonal variation; swamps; traffic; wildlife; wildlife management
Abstract:
... Hedgehogs (Erinaceous europaeus), rabbits (Oryctolagus cuniculus) and possums (Trichosurus vulpecula) were 93.4% of 1390 mammal carcasses counted during 92 trips along a 63.2 km route, 2009–2014, through peri-urban and farmland habitats. Pukeko (Porphyrio melanotus) and swamp harriers (Circus approximans) constituted 29% of the 466 bird road-kill. Comparisons indicate the recovery of hedgehog and ...
DOI:
10.1080/03014223.2016.1155465

4. Conservation Traps and Long‐Term Species Persistence in Human‐Dominated Systems

Author:
Laura Cardador; Lluís Brotons; François Mougeot; David Giralt; Gerard Bota; Manel Pomarol; Beatriz Arroyo
Source:
Conservation letters 2015 v.8 no.6 pp. 456-462
ISSN:
1755-263X
Subject:
Circus; agricultural land; biodiversity; birds; case studies; issues and policy; subsidies; threatened species; Spain
Abstract:
... Major conservation efforts in human‐dominated systems, such as farmland, have focused on the establishment of subsidies and compensation promoting low‐impact management practices to reverse the impacts of conservation threats in the short term (reactive approaches). In this study, we discuss how a different way of framing conservation policy (proactive approaches) could lead to fundamentally diffe ...
DOI:
10.1111/conl.12160

5. Testing a novel agri‐environment scheme based on the ecology of the target species, Montagu's Harrier Circus pygargus

Author:
Almut E. Schlaich; Raymond H. G. Klaassen; Willem Bouten; Christiaan Both; Ben J. Koks; Jesus Martinez‐Padilla
Source:
Ibis 2015 v.157 no.4 pp. 713-721
ISSN:
0019-1019
Subject:
Circus; agricultural land; alfalfa; biodiversity; birds; edge effects; foraging; habitats; monitoring; mowing; voles
Abstract:
... Farmland birds are in steep decline and agri‐environment schemes (AES) to counteract these biodiversity losses are expensive and inefficient. Here we test a novel AES, ‘Birdfields’, designed using detailed ecological knowledge of the target species, Montagu's Harrier Circus pygargus. Current AES, such as field margins, that aim to improve foraging conditions (i.e. vole densities) for harriers are ...
DOI:
10.1111/ibi.12299

6. A Palaearctic migratory raptor species tracks shifting prey availability within its wintering range in the Sahel

Author:
Christiane Trierweiler; Wim C. Mullié; Rudi H. Drent; Klaus‐Michael Exo; Jan Komdeur; Franz Bairlein; Abdoulaye Harouna; Marinus Bakker; Ben J. Koks; Brett Sandercock
Source:
journal of animal ecology 2013 v.82 no.1 pp. 107-120
ISSN:
0021-8790
Subject:
Acrididae; Circus; Sahel; agricultural land; birds of prey; breeding season; food availability; foods; grasshoppers; habitats; home range; migratory behavior; philopatry; rain; savannas; seasonal variation; Western Africa
Abstract:
... Mid‐winter movements of up to several hundreds of kilometres are typical for many migratory bird species wintering in Africa. Unpredictable temporary food concentrations are thought to result in random movements of such birds, whereas resightings and recoveries of marked birds suggest some degree of site fidelity. Only detailed (e.g. satellite) tracking of individual migrants can reveal the relati ...
DOI:
10.1111/j.1365-2656.2012.02036.x
PubMed:
23137184

7. Breeding biology of the Montagu’s Harrier (Circus pygargus) in east-central Poland and implications for its conservation

Author:
Dominik Krupiński; Jerzy Lewtak; Mirosław Rzępała; Krzysztof Szulak
Source:
Zoology and ecology 2012 v.22 no.2 pp. 86-92
ISSN:
2165-8013
Subject:
Circus; agricultural land; birds; breeding; clutch size; correlation; crops; eggs; farming systems; gender differences; harvest date; nesting; nests; sex ratio; weather; Poland
Abstract:
... In 2005–2011 active conservation and study on the population of the Montagu’s Harrier was conducted in the farmland areas of east-central Poland. The population was estimated at 240–270 breeding pairs and its size was stable. The mean clutch size was estimated at 3.71 eggs per breeding pair. The number of fledglings was 1.24 per nest and 2.6 per successful breeding pair. There were no significant ...
DOI:
10.1080/21658005.2012.699744

8. Feeding behaviour and diet composition of Marsh Harriers Circus aeruginosus in agricultural landscapes

Author:
Laura Cardador; Enric Planas; Anna Varea; Santi Mañosa
Source:
Bird study 2012 v.59 no.2 pp. 228-235
ISSN:
1944-6705
Subject:
Circus; agricultural land; birds; breeding; breeding season; diet; energy requirements; foraging; irrigation; nests; small mammals; Iberian Peninsula
Abstract:
... Capsule Diet composition and feeding behaviour of breeding birds differed between areas of high and low agricultural intensification. Aims To analyze diet composition and feeding behaviour of Marsh Harriers Circus aeruginosus in agricultural landscapes with different degrees of agricultural intensification. Methods Diet composition and feeding behaviour was assessed by focal observations at nests ...
DOI:
10.1080/00063657.2011.648165

9. Impacts of birds of prey on gamebirds in the UK: a review

Author:
PARK, KIRSTY J.; GRAHAM, KATE E.; CALLADINE, JOHN; WERNHAM, CHRIS W.
Source:
Ibis 2008 v.150 no.s1 pp. 9-26
ISSN:
0019-1019
Subject:
Accipiter; Circus; Falco peregrinus; Lagopus lagopus scoticus; Perdix perdix; agricultural land; bags; birds of prey; breeding; ecologists; economic impact; employment; game birds; heathlands; humans; income; managers; mortality; partridges; predation; recreation; wildlife; England; Scotland
Abstract:
... The influence of predators on the distribution, density and dynamics of their prey species has long been of interest to ecologists and wildlife managers. Where the prey population is also utilized by humans, conflicts may arise through competition for a limited resource. Because gamebird shooting in the UK provides employment, recreation and income, the impact of birds of prey on gamebird populati ...
DOI:
10.1111/j.1474-919X.2008.00847.x