Amazon floodplain fish communities: Habitat connectivity and conservation in a rapidly deteriorating environment

Hurd, Lawrence E.; Sousa, Raniere Garcez Costa; Siqueira‐Souza, Flávia K.; Cooper, Gregory; Kahn, James R.; Freitas, Carlos Edwar de Carvalho

doi:10.1016/j.biocon.2016.01.005

Cited by 117 publications

(105 citation statements)

References 84 publications

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“…Dam construction has a long-term threat to connectivity of habitats and migratory patterns of fish species (Sá-Oliveira et al, 2015), even some nonmigratory species which already exist as metapopulations in the Amazon River basin (Hurd et al, 2016). China holds some of the most rich and diverse lotic systems in the world, and hills and mountainous areas account for four-fifths of the national land territory (Cheng et al, 2009).…”

Section: Conservation Implicationsmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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The East Asian monsoon and related seasonal rain belts are assumed to be significantly variable at intraseasonal, interannual, and interdecadal time scales, and largely determine the hydrology and ecological processes of the streams and rivers in this region. This study investigated the spatiotemporal variation in fish assemblages and the relative importance of local habitat and regional landscape variables in two protected streams in the middle Yangtze River basin. We hypothesized that the stream fish assemblages in this area are strongly influenced by the monsoon climate, and display a spatiotemporal variation in response to changes of stream flow regimes and physical habitats. The results show that species richness and abundance varied with both season and stream size. The distance to the downstream confluence site was the top important environmental factor, followed by altitude and downstream link. The results suggest that the fish assemblages within this protected watershed are mainly affected by regional landscape variables such as longitudinal position and stream position, but less by local habitat variables including water temperature and habitat types. The study highlights the importance of tributary connectivity and continuity to stream fish diversity in this area, indicating that restoration activities should preferentially recover the connectivity between upstream and downstream.Handling editor: M. Power

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Section: Conservation Implicationsmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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“…Legend for symbols in MCA map (See Figure 4 and Figure 6). gold mining, overfishing and changes in river seasonality due to climate change have been described in other studies (Castello et al 2011;Pérez-Rincón 2014;Portocarrero-Aya and Cowx 2015;Hurd et al 2016), thus strengthening the argument for improving the current environmental management plans implemented in the region.…”

Section: Contributions To Community-based Management and Institutionsmentioning

confidence: 54%

“…This type of influx tends to be linked with a high level of deforestation which usually triggers further migration as people need to Figueiredo et al 2013;Hurd et al 2016). The corregimiento of La Pedrera includes the territories of 13 indigenous communities (excluding those located in La Pedrera town).…”

Section: Study Areamentioning

confidence: 99%

Assessing and mapping cultural ecosystem services at community level in the Colombian Amazon

Angarita-Baéz

Pérez-Miñana

Vargas

et al. 2017

International Journal of Biodiversity Science, Ecosystem Servic

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Understanding the significance that cultural ecosystem services (CES) have for traditional communities will provide useful input to the design of more appropriate regional or territorial plans for the area in which they are located. We conducted semi-structured surveys in 11 indigenous communities within the corregimiento La Pedrera, of the Colombian Amazon. We analysed the CES established in the region through a study of their preferences in relation to the service providing units (SPUs) identified, using the Shannon diversity index method as an indicator of 'diversity of use'. More CES were identified in communities with a larger population; education and recreation were the two most prevalent CES categories in the study area. Our findings also highlight the cultural importance of bodies of water, which were strongly linked with Spiritual and Sense of Place CES. Furthermore, the integration of qualitative and quantitative assessments enables a better understanding of the importance CES which have for the local communities involved in the study and may assist in the management of the indigenous territory.ARTICLE HISTORY

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“…These environments are highly dynamic, with an annual hydrologic cycle known as the flood pulse (Junk et al, 1989). The flood pulse is the main driving force structuring the aquatic biota of the floodplain ecosystem along the Amazon River (Junk et al, 1989;Sousa and Freitas, 2008;Hurd et al, 2016). In general, the seasonal flood reaches its peak in June and July, and its lowest point in October and November (Bittencourt and Amadio, 2007).…”

Section: Introductionmentioning

confidence: 99%

Condition factor variations over time and trophic position among four species of Characidae from Amazonian floodplain lakes: effects of an anomalous drought

et al. 2017

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The effects of extreme droughts on freshwater fish remain unknown worldwide. In this paper, we estimated the condition factor, a measure of relative fitness based on the relationship of body weight to length, in four fish species representing two trophic levels (omnivores and piscivores) from Amazonian floodplain lakes for three consecutive years: 2004, 2005 (an anomalous drought year), and 2006. The two omnivores, Colossoma macropomum and Mylossoma duriventre, exhibited trends consistent with their life cycles in 2004 and 2006: high values during the hydrologic seasons of high water, receding water, and low water, with a drop following reproduction following the onset of rising water. However during the drought year of 2005 the condition factor was much lower than normal during receding and low water seasons, probably as a result of an abnormal reduction in resource availability in a reduced habitat. The two piscivorous piranhas, Serrasalmus spilopleura and S. elongatus, maintained relatively stable values of condition factor over the hydrologic cycles of all three years, with no apparent effect of the drought, probably because the reduction in habitat is counterbalanced by the resulting increase in relative prey density. We suggest that if predictions of increasing drought in the Amazon are correct, predatory species may benefit, at least in the short run, while omnivores may be negatively affected. Keywords

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Amazon floodplain fish communities: Habitat connectivity and conservation in a rapidly deteriorating environment

Cited by 117 publications

References 84 publications

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Assessing and mapping cultural ecosystem services at community level in the Colombian Amazon

Condition factor variations over time and trophic position among four species of Characidae from Amazonian floodplain lakes: effects of an anomalous drought

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