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Seed dispersal is a crucial component of plant population dynamics. Human landscape modifications, such as habitat destruction and fragmentation, can alter the abundance of fruiting plants and animal dispersers, foraging rates, vector movement, and the composition of the disperser community, all of which can singly or in concert affect seed dispersal. Here, we quantify and tease apart the effects of landscape configuration, namely, fragmentation of primary forest and the composition of the surrounding forest matrix, on individual components of seed dispersal of Heliconia acuminata, an Amazonian understory herb. First we identified the effects of landscape configuration on the abundance of fruiting plants and six bird disperser species. Although highly variable in space and time, densities of fruiting plants were similar in continuous forest and fragments. However, the two largest-bodied avian dispersers were less common or absent in small fragments. Second, we determined whether fragmentation affected foraging rates. Fruit removal rates were similar and very high across the landscape, suggesting that Heliconia fruits are a key resource for small frugivores in this landscape. Third, we used radiotelemetry and statistical models to quantify how landscape configuration influences vector movement patterns. Bird dispersers flew farther and faster, and perched longer in primary relative to secondary forests. One species also altered its movement direction in response to habitat boundaries between primary and secondary forests. Finally, we parameterized a simulation model linking data on fruit density and disperser abundance and behavior with empirical estimates of seed retention times to generate seed dispersal patterns in two hypothetical landscapes. Despite clear changes in bird movement in response to landscape configuration, our simulations demonstrate that these differences had negligible effects on dispersal distances. However, small fragments had reduced densities of Turdus albicollis, the largest-bodied disperser and the only one to both regurgitate and defecate seeds. This change in Turdus abundance acted together with lower numbers of fruiting plants in small fragments to decrease the probability of long-distance dispersal events from small patches. These findings emphasize the importance of foraging style for seed dispersal and highlight the primacy of habitat size relative to spatial configuration in preserving biotic interactions. 相似文献
173.
Paris Elaine Cristina Malafatti João Otávio Donizette Sciena Camila Rodrigues Junior Luiz Ferreira Neves Zenatti Alessandra Escote Márcia Tsuyama Moreira Ailton José Freschi Gian Paulo Giovanni 《Environmental science and pollution research international》2021,28(19):23731-23741
Environmental Science and Pollution Research - Nanotechnology has been studied on environmental remediation processes to foster greater photocatalysts efficiency and reuse in wastewater. This study... 相似文献
174.
de Lima Samuel Vitor Assis Machado Marques Daniele Maria Silva Matheus Felipe Soares Bressanin Leticia Aparecida Magalhães Paulo César de Souza Thiago Corrêa 《Environmental science and pollution research international》2022,29(45):67787-67800
Environmental Science and Pollution Research - Chitosan induces tolerance to abiotic stress agents in plants. However, studies on the different application forms of this biopolymer are limited.... 相似文献
175.
Trentin Edicarla Ferreira Paulo Ademar Avelar Ricachenevsky Felipe Klein Morsch Letícia Hindersmann Jacson Tarouco Camila Peligrinotti Nicoloso Fernando Teixeira da Silva Lincon Oliveira Stefanello De Conti Lessandro da Silva Isley Cristiellem Bicalho Marchezan Carina Ceretta Carlos Alberto Brunetto Gustavo 《Environmental science and pollution research international》2022,29(55):82844-82854
Environmental Science and Pollution Research - High soil copper (Cu) concentrations in vineyards can cause phytotoxicity to grapevine rootstocks. In order to mitigate toxicity, the use of grapevine... 相似文献
176.
Honscha Laiz Coutelle Penteado Julia Oliveira de Sá Gama Valério da Silva Bonifácio Alícia Aikawa Priscila dos Santos Marina Baisch Paulo Roberto Martins Muccillo-Baisch Ana Luíza da Silva Júnior Flavio Manoel Rodrigues 《Environmental science and pollution research international》2022,29(10):14176-14184
Environmental Science and Pollution Research - Coal exploration and burning activities are among the activities with the greatest potential to cause atmospheric pollution due to the combustion... 相似文献
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Paulo Ricardo Santos da Silva Fernando Gonalves Amaral 《Journal of Cleaner Production》2009,17(15):1339-1350
The development of methods for process analysis has contributed to the improvement of production systems. In this context, many models and methodologies have been established in the literature in order to evaluate environmental performance of industrial processes, since it has become an important issue for society. However, few of them analyze environmental impacts and related costs simultaneously. So, this work presents an integrated methodology to perform this evaluation, based on Life Cycle Assessment (LCA) and Activity-Based Costing (ABC) principles. The proposed methodology was applied in a metallurgical industry in Brazil. As result, it allowed to identify the production process stages which have critical environmental impacts and greatest contribution to increase environmental costs of the company. 相似文献