Assessing the legacy of land use trajectories on stream fish communities of southern Brazil
- PDF / 3,341,929 Bytes
- 16 Pages / 547.087 x 737.008 pts Page_size
- 36 Downloads / 191 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
NEOTROPICAL STREAMS IN CHANGING LANDSCAPES
Assessing the legacy of land use trajectories on stream fish communities of southern Brazil Mateus Camana . Renato Bolson Dala-Corte . Fernanda Carello Collar . Fernando Gertum Becker
Received: 25 January 2020 / Revised: 24 June 2020 / Accepted: 27 June 2020 Ó Springer Nature Switzerland AG 2020
Abstract Loss of native vegetation cover in the watershed is known to affect stream fish communities. However, community response may not occur immediately after land cover change, and may become apparent only years later. In this study, we investigated how a c.a. 30-year (1985–2017) historical trajectory of native vegetation loss affected fish communities in 47 streams of southern Brazilian grasslands. We tested whether current species richness and composition would be more related to past or to recent natural
Guest editors: David J. Hoeinghaus, Jaquelini O. Zeni, Gabriel L. Breja˜o, Rafael P. Leita˜o & Renata G. Frederico / Neotropical Stream Fish Ecology in a Changing Landscape
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10750-020-04347-2) contains supplementary material, which is available to authorized users. M. Camana (&) Programa de Po´s-Graduac¸a˜o em Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil e-mail: [email protected] R. B. Dala-Corte Programa de Po´s-Graduac¸a˜o em Biodiversidade Animal, Departamento de Ecologia, Universidade Federal de Goia´s, Goiaˆnia, GO, Brazil F. C. Collar F. G. Becker (&) Departamento de Ecologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil e-mail: [email protected]
vegetation cover. We then defined trajectories of vegetation loss and tested whether different attributes (frequency, magnitude and duration of disturbance) affected particular species and functional groups. We found that current species richness and composition were more related to past than to current vegetation cover. However, we also observed that responses of particular species and functional groups were dependent on specific trajectory attributes. We concluded that present fish community characteristics may respond not only to past watershed conditions but also to how watershed conditions have changed over the time. Exploring land use trajectories seems a promising approach for improving our understanding of landscape effects on stream ecosystems, as well as the predictability of present landscape management and planning on freshwater communities. Keywords Extinction debt Thresholds Watershed management Freshwater communities Long-term trends Introduction Loss of native vegetation cover in watersheds, due to conversion to agriculture and urban land use, affects stream fish communities worldwide (Allan, 2004; Clapcott et al., 2012; Dala-Corte et al., 2016; Breja˜o et al., 2018; Wilkinson et al., 2018; Joy et al., 2019; To´th et al., 2019). Land use in the watershed affects
123
Hydrobiologia
aquatic communi
Data Loading...
