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You searched for: Journal Acta oecologica Remove constraint Journal: Acta oecologica Publication Year 2017 Remove constraint Publication Year: 2017 Source 2017 v.85 Remove constraint Source: 2017 v.85
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1. Aposematism and crypsis are not enough to explain dorsal polymorphism in the Iberian adder

Author:
Martínez-Freiría, Fernando; Pérez i de Lanuza, Guillem; Pimenta, António A.; Pinto, Tiago; Santos, Xavier
Source:
Acta oecologica 2017 v.85 pp. 165-173
ISSN:
1146-609X
Subject:
Vipera; birds of prey; cold zones; color; mammals; mimicry (behavior); models; phenotype; phenotypic variation; predation; Iberian Peninsula
Abstract:
... Aposematic organisms can show phenotypic variability across their distributional ranges. The ecological advantages of this variability have been scarcely studied in vipers. We explored this issue in Vipera seoanei, a species that exhibits five geographically structured dorsal colour phenotypes across Northern Iberia: two zigzag patterned (Classic and Cantabrica), one dorsal-strip patterned (Biline ...
DOI:
10.1016/j.actao.2017.11.003

2. Cone and seed traits of two Juniperus species influence roles of frugivores and scatter-hoarding rodents as seed dispersal agents

Author:
Dimitri, Lindsay A.; Longland, William S.; Vander Wall, Stephen B.
Source:
Acta oecologica 2017 v.85 pp. 93-103
ISSN:
1146-609X
Subject:
Juniperus occidentalis; Juniperus osteosperma; Peromyscus truei; dry environmental conditions; females; frugivores; fruits; granivores; harvesting; mice; seed dispersal; seeds; California; Nevada
Abstract:
... Seed dispersal in Juniperus is generally attributed to frugivores that consume the berry-like female cones. Some juniper cones are fleshy and resinous such as those of western juniper (Juniperus occidentalis), while others are dry and leathery such as those of Utah juniper (J. osteosperma). Rodents have been recorded harvesting Juniperus seeds and cones but are mostly considered seed predators. Ou ...
DOI:
10.1016/j.actao.2017.09.012
CHORUS:
10.1016/j.actao.2017.09.012

3. Effects of grassland degradation and precipitation on carbon storage distributions in a semi-arid temperate grassland of Inner Mongolia, China

Author:
Li, Xiaobing; Bai, Yunxiao; Wen, Wanyu; Wang, Hong; Li, Ruihua; Li, Guoqing; Wang, Han
Source:
Acta oecologica 2017 v.85 pp. 44-52
ISSN:
1146-609X
Subject:
carbon; carbon sequestration; ecosystems; environmental degradation; phytomass; roots; soil; steppes; China
Abstract:
... Environmental degradation influences carbon (C) cycling and storage in grassland ecosystems by altering vegetation productivity. However, the impacts of different degradation intensities on vegetation–soil C distributions in grasslands have not been well documented. We measured C storage in soil, roots, and plants under light, moderate, and severe degradation levels in a typical steppe region of X ...
DOI:
10.1016/j.actao.2017.09.008

4. Frugivorous birds influence the spatial organization of tropical forests through the generation of seedling recruitment foci under zoochoric trees

Author:
Trolliet, Franck; Forget, Pierre-Michel; Doucet, Jean-Louis; Gillet, Jean-François; Hambuckers, Alain
Source:
Acta oecologica 2017 v.85 pp. 69-76
ISSN:
1146-609X
Subject:
Dialium; Myristicaceae; Primates; birds; frugivores; fruits; landscapes; seed dispersal; seedlings; species diversity; species recruitment; trees; tropical forests; Republic of the Congo
Abstract:
... Animal-mediated seed dispersal is recognized to influence the spatial organization of plant communities but little is known about how frugivores cause such patterns. Here, we explored the role of hornbills and primates in generating recruitment foci under two zoochoric trees, namely Staudtia kamerunensis (Myristicaceae) and Dialium spp. (Fabaceae - Caesalpiniodea) in a forest-savanna mosaic landsc ...
DOI:
10.1016/j.actao.2017.09.010

5. How do patch quality and spatial context affect invertebrate communities in a natural moss microlandscape?

Author:
Trekels, Hendrik; Driesen, Mario; Vanschoenwinkel, Bram
Source:
Acta oecologica 2017 v.85 pp. 126-135
ISSN:
1146-609X
Subject:
biomass; canopy; community structure; environmental factors; evaporation; invertebrates; landscapes; mosses and liverworts; plant litter; temperate forests; tree trunk; water content; Western European region
Abstract:
... Globally, moss associated invertebrates remain poorly studied and it is largely unknown to what extent their diversity is driven by local environmental conditions or the landscape context. Here, we investigated small scale drivers of invertebrate communities in a moss landscape in a temperate forest in Western Europe. By comparing replicate quadrats of 5 different moss species in a continuous moss ...
DOI:
10.1016/j.actao.2017.10.003

6. Identification of the key ecological factors influencing vegetation degradation in semi-arid agro-pastoral ecotone considering spatial scales

Author:
Peng, Yu; Wang, Qinghui; Fan, Min
Source:
Acta oecologica 2017 v.85 pp. 62-68
ISSN:
1146-609X
Subject:
ecotones; environmental factors; humans; image interpretation; land use; population characteristics; rain; remote sensing; surveys; temperature; vegetation; vegetation index; China
Abstract:
... When assessing re-vegetation project performance and optimizing land management, identification of the key ecological factors inducing vegetation degradation has crucial implications. Rainfall, temperature, elevation, slope, aspect, land use type, and human disturbance are ecological factors affecting the status of vegetation index. However, at different spatial scales, the key factors may vary. U ...
DOI:
10.1016/j.actao.2017.09.011

7. Is the Peltogyne gracilipes monodominant forest characterised by distinct soils?

Author:
Nascimento, Marcelo Trindade; Barbosa, Reinaldo Imbrozio; Dexter, Kyle G.; de Castilho, Carolina Volkmer; da Silva Carvalho, Lidiany Camila; Villela, Dora Maria
Source:
Acta oecologica 2017 v.85 pp. 104-107
ISSN:
1146-609X
Subject:
Licania; topography; Astrocaryum aculeatum; stems; tropical forests; Pradosia; iron; soil; magnesium; Attalea; edaphic factors; trees; aluminum; minerals; drainage; stand basal area; silt; Peltogyne; phosphorus; Amazonia
Abstract:
... Various explanations have been put forward for monodominance in otherwise diverse tropical forests. This study assesses if the monodominance of Peltogyne gracilipes on Maraca Island in the northern Amazon can be related to edaphic factors. The basal area of P. gracilipes and the five other most common tree species on Maraca Island (Astrocaryum aculeatum, Attalea maripa, Ecclinusa guianensis, Lican ...
DOI:
10.1016/j.actao.2017.10.001

8. Light as a regulator of structural and chemical leaf defenses against insects in two Prunus species

Author:
Mąderek, Ewa; Zadworny, Marcin; Mucha, Joanna; Karolewski, Piotr
Source:
Acta oecologica 2017 v.85 pp. 18-24
ISSN:
1146-609X
Subject:
Prunus padus; Prunus serotina; catechol; forests; herbivores; insects; leaves; mesophyll; shrubs; staining; tannins; trees; Central European region; Europe
Abstract:
... Light is a key factor influencing competition between species, and the mechanisms by which trees overcome insect outbreaks can be associated with alternation of the leaves structure, which then prevent or promotes their susceptibility to herbivores. It was predicted that leaf tissue anatomy would likely be different in sun and shade leaves, with a gradual decline of leaves resistance coupled with ...
DOI:
10.1016/j.actao.2017.09.002

9. Lying in wait: Limiting factors on a low-density ungulate population and the latent traits that can facilitate escape from them

Author:
Joly, Kyle; Craig, Tim; Cameron, Matthew D.; Gall, Adrian E.; Sorum, Mathew S.
Source:
Acta oecologica 2017 v.85 pp. 174-183
ISSN:
1146-609X
Subject:
Alces alces; adults; calves; environmental factors; females; habitats; juveniles; males; migratory behavior; models; nutrition; parturition; predation; predators; radio frequency identification; survival rate; weather; winter; Alaska
Abstract:
... Predation, habitat, hunting, and environmental conditions have all been implicated as regulatory mechanisms in ungulate populations. The low-density equilibrium hypothesis predicts that in low-density populations, predators regulate their prey and that the population will not escape unless predation pressure is eased. We evaluated survival of adult and juvenile moose (Alces alces) in north-central ...
DOI:
10.1016/j.actao.2017.11.004

10. Modeling impacts of human footprint and soil variability on the potential distribution of invasive plant species in different biomes

Author:
Wan, Ji-Zhong; Wang, Chun-Jing; Yu, Fei-Hai
Source:
Acta oecologica 2017 v.85 pp. 141-149
ISSN:
1146-609X
Subject:
climate; ecological invasion; ecosystems; edaphic factors; grasslands; humans; invasive species; models; plants (botany); prediction; shrublands; soil heterogeneity; China
Abstract:
... Human footprint and soil variability may be important in shaping the spread of invasive plant species (IPS). However, until now, there is little knowledge on how human footprint and soil variability affect the potential distribution of IPS in different biomes. We used Maxent modeling to project the potential distribution of 29 IPS with wide distributions and long introduction histories in China ba ...
DOI:
10.1016/j.actao.2017.10.008

11. Nitrogen enrichment of host plants has mostly beneficial effects on the life-history traits of nettle-feeding butterflies

Author:
Kurze, Susanne; Heinken, Thilo; Fartmann, Thomas
Source:
Acta oecologica 2017 v.85 pp. 157-164
ISSN:
1146-609X
Subject:
Aglais urticae; Urtica dioica; agricultural land; butterflies; carbon nitrogen ratio; diet; eutrophication; fertilizers; host plants; land use change; landscapes; larvae; life history; nitrogen; nitrogen content; phytophagous insects; prediction; pupae; reproduction; risk; survival rate; threatened species; wings; Europe
Abstract:
... Butterflies rank among the most threatened animal groups throughout Europe. However, current population trends differ among species. The nettle-feeding butterflies Aglais io and Aglais urticae cope successfully with the anthropogenic land-use change. Both species are assumed to be pre-adapted to higher nitrogen contents in their host plant, stinging nettle (Urtica dioica). However, it is currently ...
DOI:
10.1016/j.actao.2017.11.005

12. Ontogenetic stage, plant vigor and sex mediate herbivory loads in a dioecious understory herb

Author:
Selaković, Sara; Vujić, Vukica; Stanisavljević, Nemanja; Jovanović, Živko; Radović, Svetlana; Cvetković, Dragana
Source:
Acta oecologica 2017 v.85 pp. 184-190
ISSN:
1146-609X
Subject:
Mercurialis perennis; carbohydrate content; chemical defenses; dioecy; herbivores; leaf area; nutritive value; ontogeny; proanthocyanidins; sexual dimorphism; understory; vigor
Abstract:
... Plant-herbivore interactions can be mediated by plant apparency, defensive and nutritional quality traits that change through plant ontogeny, resulting in age-specific herbivory. In dioecious species, opposing allocation patterns in defense may lead to sex-biased herbivory. Here, we examine how onto stage and plant sex determine levels of herbivore damage in understory herb Mercurialis perennis un ...
DOI:
10.1016/j.actao.2017.11.006

13. Physiological plasticity of epiphytic orchids from two contrasting tropical dry forests

Author:
de la Rosa-Manzano, Edilia; Andrade, José Luis; Zotz, Gerhard; Reyes-García, Casandra
Source:
Acta oecologica 2017 v.85 pp. 25-32
ISSN:
1146-609X
Subject:
leaf morphology; deciduous forests; osmotic pressure; Encyclia; photoperiod; tropical forests; drought; epiphytes; water stress; plasticity; photons; photosynthesis; dry forests; Laelia; stomata; prediction
Abstract:
... An enormous variation in light, both temporally and spatially, exists in tropical forests, which represents a potential driver for plant physiological plasticity. The physiological plasticity of epiphytic orchids from two tropical dry forests in response to different light environments was experimentally investigated. Plants of five species were growing in a shade-house under three different light ...
DOI:
10.1016/j.actao.2017.09.006

14. Population demography of alpine butterflies: Boloria pales and Boloria napaea (Lepidoptera: Nymphalidae) and their specific adaptations to high mountain environments

Author:
Ehl, Stefan; Ebertshäuser, Marlene; Gros, Patrick; Schmitt, Thomas
Source:
Acta oecologica 2017 v.85 pp. 53-61
ISSN:
1146-609X
Subject:
Nymphalidae; age structure; butterflies; demography; ecosystems; flight; habitats; mortality; national parks; population size; probability; snow; Arctic region; Austria
Abstract:
... High mountain ecosystems are extreme habitats, and adaptation strategies to this ecosystem are still poorly understood in most groups. To unravel such strategies, we performed a MRR study in the Hohe Tauern National Park (Salzburg, Austria) with two nymphalid butterfly species, Boloria pales and B. napaea. We analysed their population structure over one flight period by studying the development of ...
DOI:
10.1016/j.actao.2017.09.009

15. Refuse dumps from leaf-cutting ant nests reduce the intensity of above-ground competition among neighboring plants in a Patagonian steppe

Author:
Farji-Brener, Alejandro G.; Lescano, María Natalia
Source:
Acta oecologica 2017 v.85 pp. 136-140
ISSN:
1146-609X
Subject:
Acromyrmex; Carduus nutans subsp. leiophyllus; aboveground biomass; ant nests; belowground biomass; dry environmental conditions; forbs; greenhouse experimentation; habitats; intraspecific competition; leaf-cutting ants; nutrient availability; nutrients; plant competition; plant growth; seedlings; solar radiation; solid wastes; steppe soils; steppes; trees
Abstract:
... In arid environments, the high availability of sunlight due to the scarcity of trees suggests that plant competition take place mainly belowground for water and nutrients. However, the occurrence of soil disturbances that increase nutrient availability and thereby promote plant growth may enhance shoot competition between neighboring plants. We conducted a greenhouse experiment to evaluate the inf ...
DOI:
10.1016/j.actao.2017.10.009

16. Relationships between soil parameters and vegetation in abandoned terrace fields vs. non-terraced fields in arid lands (Lanzarote, Spain): An opportunity for restoration

Author:
Arévalo, José Ramón; Fernández-Lugo, Silvia; Reyes-Betancort, J. Alfredo; Tejedor, Marisa; Jiménez, Concepción; Díaz, Francisco J.
Source:
Acta oecologica 2017 v.85 pp. 77-84
ISSN:
1146-609X
Subject:
aesthetic value; agroecosystems; arid lands; biodiversity conservation; calcium carbonate; exchangeable sodium; indigenous species; land restoration; landscapes; plant communities; plants (botany); salinity; sodic soils; sodium; soil depth; soil quality; terraces; terracing; vegetation; water content; Canary Islands; Spain
Abstract:
... Over 90% of terraced fields have been abandoned on the island of Lanzarote in the last 40 years. The present work analyses the effects of abandonment on the soil and vegetation recovery of terraced field agroecosystems by comparing them with adjacent non-terraced fields in Lanzarote, Canary Islands (Spain). This information is necessary to take the appropriate management actions to achieve goals s ...
DOI:
10.1016/j.actao.2017.09.014

17. Seed-deposition and recruitment patterns of Clusia species in a disturbed tropical montane forest in Bolivia

Author:
Saavedra, Francisco; Hensen, Isabell; Apaza Quevedo, Amira; Neuschulz, Eike Lena; Schleuning, Matthias
Source:
Acta oecologica 2017 v.85 pp. 85-92
ISSN:
1146-609X
Subject:
Clusia; animals; edge effects; environmental factors; habitats; montane forests; plant communities; saplings; seedlings; seeds; species recruitment; traps; tropical forests; Andes region; Bolivia
Abstract:
... Spatial patterns of seed dispersal and recruitment of fleshy-fruited plants in tropical forests are supposed to be driven by the activity of animal seed dispersers, but the spatial patterns of seed dispersal, seedlings and saplings have rarely been analyzed simultaneously. We studied seed deposition and recruitment patterns of three Clusia species in a tropical montane forest of the Bolivian Andes ...
DOI:
10.1016/j.actao.2017.09.013

18. Spatial pattern of Baccharis platypoda shrub as determined by sex and life stages

Author:
Fonseca, Darliana da Costa; de Oliveira, Marcio Leles Romarco; Pereira, Israel Marinho; Gonzaga, Anne Priscila Dias; de Moura, Cristiane Coelho; Machado, Evandro Luiz Mendonça
Source:
Acta oecologica 2017 v.85 pp. 33-43
ISSN:
1146-609X
Subject:
Baccharis; adults; dioecy; female plants; females; intraspecific competition; males; nutrient requirements; shrubs
Abstract:
... Spatial patterns of dioecious species can be determined by their nutritional requirements and intraspecific competition, apart from being a response to environmental heterogeneity. The aim of the study was to evaluate the spatial pattern of populations of a dioecious shrub reporting to sex and reproductive stage patterns of individuals. Sampling was carried out in three areas located in the meridi ...
DOI:
10.1016/j.actao.2017.09.001

19. Temporal variation in bat-fruit interactions: Foraging strategies influence network structure over time

Author:
Zapata-Mesa, Natalya; Montoya-Bustamante, Sebastián; Murillo-García, Oscar E.
Source:
Acta oecologica 2017 v.85 pp. 9-17
ISSN:
1146-609X
Subject:
Chiroptera; foraging; nestedness; seed dispersal; species diversity; temporal variation
Abstract:
... Mutualistic interactions, such as seed dispersal, are important for the maintenance of structure and stability of tropical communities. However, there is a lack of information about spatial and temporal variation in plant-animal interaction networks. Thus, our goal was to assess the effect of bat's foraging strategies on temporal variation in the structure and robustness of bat-fruit networks in b ...
DOI:
10.1016/j.actao.2017.09.003

20. Thermodynamics, ecology and evolutionary biology: A bridge over troubled water or common ground?

Author:
Skene, Keith R.
Source:
Acta oecologica 2017 v.85 pp. 116-125
ISSN:
1146-609X
Subject:
biosphere; ecology; extinction; metaphysics; temporal variation; thermodynamics
Abstract:
... This paper addresses a key issue confronting ecological and evolutionary biology, namely the challenge of a cohesive approach to these fields given significant differences in the concepts and foundations of their study. Yet these two areas of scientific research are paramount in terms addressing the spatial and temporal dynamics and distribution of diversity, an understanding of which is needed if ...
DOI:
10.1016/j.actao.2017.10.010