Large-scale patterns of fish diversity and assemblage structure in the longest tropical river in Asia

2016 ◽  
Vol 26 (4) ◽  
pp. 575-585 ◽  
Author(s):  
Ratha Chea ◽  
Sovan Lek ◽  
Pengbun Ngor ◽  
Gaël Grenouillet
Keyword(s):  
Large Scale ◽  
Assemblage Structure ◽  
Fish Diversity ◽  
Tropical River

Effects of Hydrology on Fish Diversity and Assemblage Structure in a Texan Coastal Plains River

2018 ◽  
Vol 148 (1) ◽  
pp. 207-218 ◽  
Author(s):  
Luke M. Bower ◽  
Friedrich W. Keppeler ◽  
Eduardo R. Cunha ◽  
Yasmin Quintana ◽  
David E. Saenz ◽  
...  
Keyword(s):  
Assemblage Structure ◽  
Fish Diversity ◽  
Coastal Plains

scholarly journals Fish assemblage in a dammed tropical river: an analysis along the longitudinal and temporal gradients from river to reservoir

2010 ◽  
Vol 8 (3) ◽  
pp. 599-606 ◽  
Author(s):  
Bianca de Freitas Terra ◽  
Alex Braz Iacone dos Santos ◽  
Francisco Gerson Araújo
Keyword(s):  
Fish Assemblage ◽  
Transitional Zone ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Wet Season ◽  
Tropical River ◽  
Longitudinal Gradient ◽  
Species Overlap ◽  
Seasonal Flow ◽  
Paraíba Do Sul River

We analysed changes in the fish assemblage structure along a longitudinal gradient of the Paraíba do Sul River and Funil Reservoir. We tested the hypothesis that shifts from lotic to lentic environment affect the richness and structure of the assemblage which are modulated by seasonal rainfall changes. Standardised monthly samplings were carried out from October 2006 to September 2007 in four zones: 1) river upstream from the reservoir; 2) upper part of the reservoir; 3) lower part of the reservoir, and 4) river downstream from the reservoir. Fishes were caught using gillnets deployed for 15 hours. We collected a total of 4550 specimens, representing 35 species and 5 orders. The highest richness and diversity were recorded in zone 2, the transitional zone between river and reservoir. In this ecotone, lotic and lentic species overlap. Greater abundance and biomass was recorded in the river upstream from the reservoir (zone 1); however, there are no differences between the zones in the structure of assemblages during the wet season. During the dry season, the assemblage structure is more differentiated between zones, although no differences in abundance and biomass occur. The seasonal flow of the river is the major driving factor to influence the fish assemblage structure along the longitudinal gradient from the river to the reservoir.

Understanding spatial and temporal patterns of fish diversity and assemblage structure vis-a-vis environmental parameters in a tropical Indian reservoir

2019 ◽  
Vol 26 (9) ◽  
pp. 9089-9098 ◽  
Author(s):  
Lianthuamluaia Lianthuamluaia ◽  
Puthiyottil Mishal ◽  
Debabrata Panda ◽  
Uttam Kumar Sarkar ◽  
Vikash Kumar ◽  
...  
Keyword(s):  
Environmental Parameters ◽  
Temporal Patterns ◽  
Assemblage Structure ◽  
Fish Diversity ◽  
Spatial And Temporal Patterns

scholarly journals Explaining the ocean's richest biodiversity hotspot and global patterns of fish diversity

2018 ◽  
Vol 285 (1888) ◽  
pp. 20181314 ◽  
Author(s):  
Elizabeth Christina Miller ◽  
Kenji T. Hayashi ◽  
Dongyuan Song ◽  
John J. Wiens
Keyword(s):  
Large Scale ◽  
Fish Diversity ◽  
Relative Importance ◽  
Diversification Rates ◽  
Marine Habitats ◽  
History Of ◽  
Richness Patterns ◽  
Colonization Time ◽  
Almost All

For most marine organisms, species richness peaks in the Central Indo-Pacific region and declines longitudinally, a striking pattern that remains poorly understood. Here, we used phylogenetic approaches to address the causes of richness patterns among global marine regions, comparing the relative importance of colonization time, number of colonization events, and diversification rates (speciation minus extinction). We estimated regional richness using distributional data for almost all percomorph fishes (17 435 species total, including approximately 72% of all marine fishes and approximately 33% of all freshwater fishes). The high diversity of the Central Indo-Pacific was explained by its colonization by many lineages 5.3–34 million years ago. These relatively old colonizations allowed more time for richness to build up through in situ diversification compared to other warm-marine regions. Surprisingly, diversification rates were decoupled from marine richness patterns, with clades in low-richness cold-marine habitats having the highest rates. Unlike marine richness, freshwater diversity was largely derived from a few ancient colonizations, coupled with high diversification rates. Our results are congruent with the geological history of the marine tropics, and thus may apply to many other organisms. Beyond marine biogeography, we add to the growing number of cases where colonization and time-for-speciation explain large-scale richness patterns instead of diversification rates.

Large-Scale Variation in Assemblage Structure of Red Sea Butterflyfishes and Angelfishes

1992 ◽  
Vol 19 (3) ◽  
pp. 239 ◽  
Author(s):  
Callum M. Roberts ◽  
Alexander R. Dawson Shepherd ◽  
Rupert F. G. Ormond
Keyword(s):  
Red Sea ◽  
Large Scale ◽  
Assemblage Structure ◽  
Scale Variation

scholarly journals Large-scale spatio-temporal monitoring highlights hotspots of demersal fish diversity in the Mediterranean Sea

2015 ◽  
Vol 130 ◽  
pp. 65-74 ◽  
Author(s):  
Victoria Granger ◽  
Jean-Marc Fromentin ◽  
Nicolas Bez ◽  
Giulio Relini ◽  
Christine N. Meynard ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Large Scale ◽  
Demersal Fish ◽  
Fish Diversity ◽  
The Mediterranean ◽  
Spatio Temporal

scholarly journals The Silent Threat of Non-native Fish in the Amazon: ANNF Database and Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Carolina Rodrigues da Costa Doria ◽  
Edwin Agudelo ◽  
Alberto Akama ◽  
Bruno Barros ◽  
Mariana Bonfim ◽  
...  
Keyword(s):  
Large Scale ◽  
Poecilia Reticulata ◽  
Management Strategies ◽  
First Record ◽  
Current Data ◽  
Amazon Region ◽  
Native Fish ◽  
Fish Diversity ◽  
Limited Information ◽  
Occurrence Records

Non-native fish (NNF) can threaten megadiverse aquatic ecosystems throughout the planet, but limited information is available for the Amazon Region. In this study we review NNF data in the Amazonian macroregion using spatiotemporal records on the occurrence and the richness of NNF from a collaborative network of 35 regional experts, establishing the Amazon NNF database (ANNF). The NNF species richness was analyzed by river basin and by country, as well as the policies for each geopolitical division for the Amazon. The analysis included six countries (Brazil, Peru, Bolivia, Ecuador, Venezuela, and Colombia), together comprising more than 80% of the Amazon Region. A total of 1314 NNF occurrence records were gathered. The first record of NNF in this region was in 1939 and there has been a marked increase in the last 20 years (2000–2020), during which 75% of the records were observed. The highest number of localities with NNF occurrence records was observed for Colombia, followed by Brazil and Bolivia. The NNF records include 9 orders, 17 families and 41 species. Most of the NNF species are also used in aquaculture (12 species) and in the aquarium trade (12 species). The most frequent NNF detected were Arapaima gigas, Poecilia reticulata and Oreochromis niloticus. The current data highlight that there are few documented cases on NNF in the Amazon, their negative impacts and management strategies adopted. The occurrence of NNF in the Amazon Region represents a threat to native biodiversity that has been increasing “silently” due to the difficulties of large-scale sampling and low number of NNF species reported when compared to other South American regions. The adoption of effective management measures by decision-makers is urgently needed and their enforcement needed to change this alarming trend and help protect the Amazon’s native fish diversity.

scholarly journals Spring Ichthyoplankton Assemblage Structure in the Yangtze Estuary Under Environmental Factors

2021 ◽  
Vol 8 ◽  
Author(s):  
Yibang Wang ◽  
Cui Liang ◽  
Zhaomin Chen ◽  
Shude Liu ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Dominant Species ◽  
Large Scale ◽  
Yangtze Estuary ◽  
Assemblage Structure ◽  
The Yangtze Estuary ◽  
Larimichthys Polyactis ◽  
Factors Affecting ◽  
Coilia Mystus ◽  
Trachidermus Fasciatus ◽  
Fish Spawning

Estuaries, where fresh and salty water converge, provide abundant nutrients for ichthyoplankton. Ichthyoplankton, including fish eggs, larvae, and juveniles, are important fishery recruitment resources. The Yangtze Estuary and its adjacent waters comprise a typical large-scale estuary and supply many important fish spawning, feeding, and breeding areas. In this study, 1,291 ichthyoplankton individuals were collected in the Yangtze Estuary in spring, from 2013 to 2020. The aims of the study were to provide detailed information on characteristics of the ichthyoplankton assemblage, explore interannual variation, and evaluate the effects of environmental variables on the temporal variation in assemblage structure. Twenty-six species in seventeen families were identified. The dominant species were Coilia mystus, Chelidonichthys spinosus, Engraulis japonicus, Hypoatherina valenciennei, Larimichthys polyactis, Salanx ariakensis, Stolephorus commersonnii, and Trachidermus fasciatus. The ichthyoplankton assemblage changed significantly over time, and Chelidonichthys spinosus became one of the dominant species. Canonical correspondence analysis showed that temperature and chlorophyll a were the key factors affecting the assemblage structure in the Yangtze Estuary in spring.

scholarly journals Fish diversity and assemblage structure in Ken River of Panna landscape, central India

2012 ◽  
Vol 4 (13) ◽  
pp. 3161-3172 ◽  
Author(s):  
J.A. Johnson ◽  
Ravi Parmar ◽  
K. Ramesh ◽  
Subharanjan Sen ◽  
R. Sreenivasa Murthy
Keyword(s):  
Central India ◽  
Assemblage Structure ◽  
Fish Diversity
Sign in / Sign up

Export Citation Format

Share Document