scholarly journals The relationship between pond habitat depth and functional tadpole diversity in an agricultural landscape

2015 ◽  
Vol 2 (7) ◽  
pp. 150165 ◽  
Author(s):  
Cássia de Souza Queiroz ◽  
Fernando Rodrigues da Silva ◽  
Denise de Cerqueira Rossa-Feres

One of the most important goals of biodiversity studies is to identify which characteristics of local habitats act as filters that determine the diversity of functional traits along environmental gradients. In this study, we investigated the relationship between the environmental variables of ponds and the functional trait diversity distribution of anuran tadpoles in an agricultural area in southeastern Brazil. Our results show that the functional trait diversity of frog tadpoles has a bell-curve-shaped relationship with the depths of ponds inserted in a pasture matrix. Because we are witnessing increasing human pressure on land use, simple acts (e.g. maintaining reproductive habitats with medium depth) can be the first steps towards preserving the diversity of Neotropical frog tadpole traits in agricultural landscapes.

2016 ◽  
Vol 38 (5) ◽  
pp. 511 ◽  
Author(s):  
Zhao Na ◽  
Wang Zhengwen ◽  
Shao Xinqing ◽  
Wang Kun

The diversity–stability relationship has been addressed and debated for decades, but how this relationship is affected by nutrient availability remains contentious. In the present study we assessed the effects of plant diversity, in terms of species richness, functional group composition and functional trait diversity, on the spatial stability of net primary productivity (NPP) following nitrogen and phosphorus application. In addition, we explored how functional traits at the species level contribute to the spatial stability of NPP. The results support the hypothesis that greater diversity leads to higher spatial stability. This relationship was highly dependent on soil nutrient availability, and increasing species richness or functional trait diversity significantly increased spatial variation of NPP under a high N fertilisation level. The effects of high mineral fertilisation rates may perhaps have masked the effects of plant diversity. Although species richness or functional trait diversity of the original and modified communities from which species with particular functional traits had been removed were significantly different, there were no differences in the coefficients of variation in the NPP of those communities. The lack of difference demonstrated that the relationship between spatial variability and biodiversity depended on the measure of diversity applied and that the functional group composition exerted a stronger effect than other diversity measures. Further analyses revealed that spatial stability of NPP was enhanced with increased diversity in vegetative plant height, rooting depth and the presence of legume, and diminished with diversity in the root system type and life cycle under some fertilisation treatments. The present study demonstrates that the relationship between biodiversity and ecosystem functioning is variable with different diversity, identity and environmental factors. Evaluating the contribution of particular traits to community stability will ultimately help us better understand the mechanisms underlying the diversity–stability relationship.


2015 ◽  
Vol 52 (3) ◽  
pp. 706-715 ◽  
Author(s):  
Jessica R. K. Forrest ◽  
Robbin W. Thorp ◽  
Claire Kremen ◽  
Neal M. Williams

2015 ◽  
Vol 18 (12) ◽  
pp. 1346-1355 ◽  
Author(s):  
Hélène Deraison ◽  
Isabelle Badenhausser ◽  
Nicolas Loeuille ◽  
Christoph Scherber ◽  
Nicolas Gross

2018 ◽  
Vol 32 (5) ◽  
pp. 1379-1389 ◽  
Author(s):  
Hui Zhang ◽  
Han Y. H. Chen ◽  
Juyu Lian ◽  
Robert John ◽  
Li Ronghua ◽  
...  

2020 ◽  
Vol 287 ◽  
pp. 106691 ◽  
Author(s):  
Carolyn J. Lowry ◽  
Sidney C. Bosworth ◽  
Sarah C. Goslee ◽  
Richard J. Kersbergen ◽  
Fredric W. Pollnac ◽  
...  

2019 ◽  
Vol 64 (5) ◽  
pp. 2140-2151
Author(s):  
Maria Włodarska‐Kowalczuk ◽  
Magnus Aune ◽  
Loïc N. Michel ◽  
Agata Zaborska ◽  
Joanna Legeżyńska

2019 ◽  
pp. 233
Author(s):  
Dian Kartika Santoso ◽  
Antariksa Antariksa ◽  
Sri Utami

A review of cultivation changes in agricultural landscapes in the enclave village of Bromo TenggerSemeru National Park, Ngadas, Malang Regency Ngadas village is one example of an agricultural villagelocated in the mountains. Ngadas village is located in the enclave of Bromo Tengger Semeru National Park(TNBTS) in the Malang Regency, East Java. The dependence of the community on agricultural land makesNgadas have a strong agrarian image. Ngadas people do more activities in the fields than in the house. Asbasic landscape units in the form of mountains, they have a vulnerability if not used wisely. The problem ofvulnerability to erosion in the agricultural landscape, makes Ngadas Village interesting to study. Primarily,regarding the relationship of landscapes and land conservation efforts that must be made to a complexagricultural landscape. Therefore, there is a need for research that focuses on efforts to conserve land, especially in an agricultural landscape. Research is conducted through qualitative methods with spatial andqualitative descriptive comparative analysis. The results of the study show that changes in farming methodshave several disadvantages that can cause land degradation and reduced productivity in each period, includingthe shifting cultivation system to reduce nutrients, upper slopes planted with tubers and monoculture agriculture.Therefore, it is necessary to have the right recommendations, namely planting upper slopes with hard woodplants, planting with polyculture systems, and agroforestry systems applied on the upper slopes.


PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3051 ◽  
Author(s):  
Étienne Normandin ◽  
Nicolas J. Vereecken ◽  
Christopher M. Buddle ◽  
Valérie Fournier

Urbanization is one of the major anthropogenic processes contributing to local habitat loss and extirpation of numerous species, including wild bees, the most widespread pollinators. Little is known about the mechanisms through which urbanization impacts wild bee communities, or the types of urban green spaces that best promote their conservation in cities. The main objective of this study was to describe and compare wild bee community diversity, structure, and dynamics in two Canadian cities, Montreal and Quebec City. A second objective was to compare functional trait diversity among three habitat types (cemeteries, community gardens and urban parks) within each city. Bees were collected using pan traps and netting on the same 46 sites, multiple times, over the active season in 2012 and 2013. A total of 32,237 specimens were identified, representing 200 species and 6 families, including two new continental records,Hylaeus communisNylander (1852) andAnthidium florentinum(Fabricius, 1775). Despite high community evenness, we found significant abundance of diverse species, including exotic ones. Spatio-temporal analysis showed higher stability in the most urbanized city (Montreal) but low nestedness of species assemblages among the three urban habitats in both cities. Our study demonstrates that cities are home to diverse communities of wild bees, but in turn affect bee community structure and dynamics. We also found that community gardens harbour high levels of functional trait diversity. Urban agriculture therefore contributes substantially to the provision of functionally diverse bee communities and possibly to urban pollination services.


2011 ◽  
Vol 145 (1) ◽  
pp. 10-28 ◽  
Author(s):  
Jiří Doležal ◽  
Zuzana Mašková ◽  
Jan Lepš ◽  
Daniela Steinbachová ◽  
Francesco de Bello ◽  
...  

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