Article
Ecology
Vincent Calcagno, Patrice David, Philippe Jarne, Francois Massol
Summary: The complexity of food webs is influenced by environmental variables, but it is unclear how food-chain length is affected by the adaptive evolution of species. In this study, we modeled the evolution of species colonization rates and found that longer food-chains can persist when colonization rates can evolve. Extinction, perturbation, and habitat loss all impact the evolutionarily stable colonization rates, with weaker trade-offs leading to longer chains.
Article
Biodiversity Conservation
Yongzhi Yan, Scott Jarvie, Qingfu Liu, Qing Zhang
Summary: This study evaluated the impacts of habitat loss and fragmentation on grassland plant species richness in the agro-pastoral ecotone of northern China. The results showed that habitat loss had a negative effect on overall species richness and grassland specialist richness, but a positive effect on weed richness. Additionally, the increase in patch density caused by habitat loss had a positive effect on overall species richness and grassland specialist richness. These findings highlight the importance of adding habitat patches in fragmented landscapes for conserving habitat specialists.
BIOLOGICAL CONSERVATION
(2022)
Article
Multidisciplinary Sciences
Lucas D. Fernandes, Angelica S. Mata, Wesley A. C. Godoy, Carolina Reigada
Summary: Species distributions and dynamics are influenced by the interplay between dispersal at different spatial scales and landscape connectivity and composition. This study examines the effects of these factors on local species dynamics using a host-parasitoid model. The results demonstrate the importance of both local and regional scales, as well as the combined effects of species biological parameters and landscape structure, in shaping species density and occupancy. These findings have practical implications for the development of effective strategies for biological control.
Article
Biodiversity Conservation
Andrew J. Hamer
Summary: By conducting frog surveys at 65 ponds along an urban-rural gradient in the greater Melbourne region, it was found that the proportion of total greenspace within a 1000-m radius of a pond was positively correlated with local species occupancy, while the presence of a vertical pond wall had a negative impact on community occupancy. Moreover, barriers did not seem to affect occupancy, suggesting that urban areas may be more permeable for movement by some species than anticipated.
Article
Multidisciplinary Sciences
Rico Fischer, Franziska Taubert, Michael S. Mueller, Juergen Groeneveld, Sebastian Lehmann, Thorsten Wiegand, Andreas Huth
Summary: The study shows that approximately 31% of the total tropical forest area is now located at the forest edge, with about 20 million additional forest fragments, significantly impacting connectivity within tropical landscapes. By 2100, it is projected that 50% of tropical forest area will be at the forest edge, leading to up to 500 million metric tons of additional carbon emissions per year.
Article
Biodiversity Conservation
Hemant G. Tripathi, Emily S. Woollen, Mariana Carvalho, Catherine L. Parr, Casey M. Ryan
Summary: The study found that land use change is the main cause of global biodiversity loss, but the impact varies in different ecosystems. In miombo woodlands in northern Mozambique, tree and mammal abundance and diversity showed a non-linear relationship with small scale agricultural expansion, with a peak at intermediate expansion levels. Additionally, the research highlighted the importance of maintaining habitat cover and avoiding extreme levels of land use change to protect biodiversity in savanna landscapes.
BIODIVERSITY AND CONSERVATION
(2021)
Article
Biodiversity Conservation
Yuhao Zhao, Nathan J. Sanders, Juan Liu, Tinghao Jin, Haonan Zhou, Ruisen Lu, Ping Ding, Xingfeng Si
Summary: The study assessed beta diversity of ant assemblages on island fragments in the Thousand Island Lake, China, finding that taxonomic and phylogenetic turnover components dominated overall beta diversity, while functional turnover and nestedness components contributed equally. Overall beta diversity increased with increasing isolation and inter-island distance, but abundance-weighted overall beta diversity decreased with increasing island size. These results suggest that dispersal limitation and functional redundancy may play a role in shaping beta diversity patterns in fragmented habitats.
Article
Ecology
F. Mestre, B. Silva
Summary: The lconnect R package is a user-friendly tool for assessing landscape connectivity and prioritizing habitat patches, which helps understand and address the challenges in biodiversity conservation.
ECOLOGICAL MODELLING
(2023)
Article
Ecology
Dongbo Li, Christopher F. Clements, Isobel L. G. Shan, Jane Memmott
Summary: The quality of corridors positively impacts the probability of dispersal, net movement, and rate of change in population size. Corridor length and width affect the rate at which populations increase and the number of individuals dispersing.
Article
Ecology
J. Lazzari, C. F. Sato, D. A. Driscoll
Summary: This study investigates the responses of reptile trait groups to habitat fragmentation, patch isolation, and fire. The results show that experimental burns do not benefit any trait group, but reduce the abundance of viviparous, small, and above-ground species. Species richness is lower in isolated sites, while generalist trait groups are unaffected by patch isolation. Large-sized reptiles have higher abundance in remnant patches.
Article
Ecology
Ravi Jambhekar, Kavita Isvaran
Summary: A fundamental question in ecology is to understand how species are distributed in a landscape. This study investigated the population responses of butterfly species to patch size and connectivity in naturally heterogeneous tropical forest-grassland complexes, and found that ecological specialization and matrix resistance played important roles in predicting population responses.
Article
Biodiversity Conservation
Joseph Williamson, Eleanor M. Slade, Sarah H. Luke, Tom Swinfield, Arthur Y. C. Chung, David A. Coomes, Herry Heroin, Tommaso Jucker, Owen T. Lewis, Charles S. Vairappan, Stephen J. Rossiter, Matthew J. Struebig
Summary: Research shows that riparian buffers in tropical agricultural landscapes can serve as microclimate refuges, offering cooler and more humid conditions compared to surrounding oil palm plantations. Wider buffers and high vegetation quality are strongly associated with cooler and more humid microclimates, which are essential for biodiversity conservation.
JOURNAL OF APPLIED ECOLOGY
(2021)
Article
Marine & Freshwater Biology
Carlota Baranano, Emilio Fernandez, Paloma Moran, Pablo Urbieta, Gonzalo Mendez
Summary: This investigation examines the spatial and temporal dynamics of a Zostera marina seagrass meadow affected by clam harvesting. The study finds that the shellfishing activity leads to fragmented and discontinuous seagrass matrix, and there are significant differences in population dynamics and genetic characteristics between impacted and non-impacted areas.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Ecology
Eliana Cazetta, Lenore Fahrig
Summary: The meta-analysis on seed dispersal by frugivorous animals showed that altered habitat spatial pattern negatively affects the quantity of frugivory or seed dispersal, the number of species involved in a plant-frugivore interaction, and seed dispersal distance. Habitat loss at both local and landscape scales results in reduced frugivory or seed dispersal, with greater impact in temperate areas. The effects of landscape-scale fragmentation on seed dispersal quantity were found to be mixed and weak.
Article
Ecology
Duojie Jiabu, Weide Li
Summary: Biological invasion leads to various problems for ecosystems and human life. A patch dynamic model is used to investigate the mechanism of alien species invading a stable food web. The study explores the impact of invasion on species persistence in different habitat conditions. The results indicate that invasive species as prey are more successful in omnivorous food webs and show higher tolerance towards habitat loss and fragmentation compared to invasive species as predators.
ECOLOGICAL MODELLING
(2023)