scholarly journals Spatial and temporal variation of fish assemblages in a coastal lagoon of the Biosphere Reserve La Encrucijada, Chiapas, Mexico

2007 ◽  
Author(s):  
Ernesto Velázquez Velázquez ◽  
M. Eugenia Vega Cendejas ◽  
Jorge Navarro Aberto
Keyword(s):  
Temporal Variation ◽  
Coastal Lagoon ◽  
Fish Assemblages ◽  
Biosphere Reserve ◽  
Spatial And Temporal Variation

Spatial and temporal variation in assemblages of Lutjanidae, Lethrinidae and associated fish species among mid-continental shelf reefs in the central Great Barrier Reef

2001 ◽  
Vol 52 (6) ◽  
pp. 843 ◽  
Author(s):  
Stephen J. Newman ◽  
David McB. Williams
Keyword(s):  
Continental Shelf ◽  
Temporal Variation ◽  
Fish Assemblages ◽  
Spatial And Temporal Variation ◽  
Shallow Trap ◽  
Fish Traps ◽  
Lutjanus Carponotatus ◽  
Plectropomus Leopardus ◽  
Trap Catches ◽  
Over Time

Visual censuses were used to survey shallow-water assemblages of the Lutjanidae and Lethrinidae among three mid-continental shelf reefs, and fish traps were used to survey deeper water assemblages below diveable depths. Significant differences were found in visual censuses of the Lutjanidae and Lethrinidae among reefs. Trap catches of the Lutjanidae and Lethrinidae varied more between depths and diel sampling periods than among reefs or over time. Lutjanus carponotatus, L. fulviflamma and Lethrinus miniatus were more abundant in shallow trap sets, whereas Lutjanus adetii, L. russelli, L. sebae, L. vitta, Gymnocranius audleyi, Lethrinus sp.2 and Abalistes stellaris were more abundant in deeper sets. Additionally, Lutjanus adetii, L. fulviflamma, L. quinquelineatus, L. russelli, L. sebae, L. vitta and Lethrinus miniatus were more abundant at night, whereas Lethrinus sp. 2, Abalistes stellarisand Plectropomus leopardus were more abundant during the day. The absence of significant temporal variation in the observed spatial patterns both among reefs and between depths indicates that these patterns may persist through time. The use of both visual censuses and fish traps to assess reef fish assemblages may provide an objective way of repeatedly censusing reefs for monitoring purposes, especially where differences among reefs and regions are important.

Fish composition in a south-western Atlantic temperate coastal lagoon: spatial–temporal variation and relationships with environmental variables

2009 ◽  
Vol 89 (3) ◽  
pp. 593-604 ◽  
Author(s):  
M. González Castro ◽  
J.M. Díaz de Astarloa ◽  
M.B. Cousseau ◽  
D.E. Figueroa ◽  
S.M. Delpiani ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Coastal Lagoon ◽  
Environmental Variables ◽  
Mesh Size ◽  
High Abundance ◽  
Spatial And Temporal Variation ◽  
Salinity Range ◽  
Buenos Aires Province ◽  
Western Atlantic ◽  
Odontesthes Argentinensis

Mar Chiquita, an irregularly shaped brackish-water coastal lagoon, is located in the Buenos Aires province of Argentina and considered since 1996 by the Coordination Council of the Man and Biosphere Program of UNESCO as a World Reserve of Biosphere. The present paper aims to study both the spatial and temporal variation of fish composition in this coastal lagoon and the influence of some environmental variables on the relative abundance of the main fish species. Monthly sampling surveys over a two-year period in three different areas were conducted, using a beach-seine net and three monofilament-gill nets with different mesh size. Twenty-eight species belonging to four bio-ecological categories were identified, five of them are new records for Mar Chiquita fish community. The correspondence analysis showed strong relationships between high salinity range and the abundance of Brevoortia aurea, Cynoscion guatucupa and Pomatomus saltatrix. Conversely, low salinity range corresponded to high abundance of Mugil platanus and Odontesthes argentinensis. High temperatures were corresponded with abundance of Micropogonias furnieri and Brevoortia aurea. In contrast, high abundance of both Odontesthes argentinensis and Oligosarcus jenynsii were corresponded to low temperatures. Brevoortia aurea, Mugil platanus and Odontesthes argentinensis were the most abundant species, representing more than 80% of the total capture. The group of estuarine-nondependent-marine fish presented the highest species richness. Estuarine-dependent-marine species presented for both juveniles and adults specimens the highest abundance values.

scholarly journals EXPLORING SPATIAL AND TEMPORAL VARIATION WITHIN RESERVOIR FOOD WEBS: PREDICTIONS FOR FISH ASSEMBLAGES

1998 ◽  
Vol 8 (1) ◽  
pp. 104-120 ◽  
Author(s):  
James E. Garvey ◽  
Natalie A. Dingledine ◽  
Nicholas S. Donovan ◽  
Roy A. Stein
Keyword(s):  
Temporal Variation ◽  
Food Webs ◽  
Fish Assemblages ◽  
Spatial And Temporal Variation

scholarly journals Partitioning the variation in stream fish assemblages within a spatio-temporal hierarchy

2007 ◽  
Vol 58 (7) ◽  
pp. 675 ◽  
Author(s):  
Ben Stewart-Koster ◽  
Mark J. Kennard ◽  
Bronwyn D. Harch ◽  
Fran Sheldon ◽  
Angela H. Arthington ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Total Variation ◽  
Fish Assemblages ◽  
Environmental Variation ◽  
Spatial And Temporal Variation ◽  
Spatial Effects ◽  
Explanatory Variables ◽  
Spatio Temporal ◽  
Variation Explained ◽  
Stream Fish Assemblages

This paper describes the relative influence of (i) landscape scale environmental and hydrological factors, (ii) local scale environmental conditions including recent flow history, and (iii) spatial effects (proximity of sites to one another), on the spatial and temporal variation in local freshwater fish assemblages in the Mary River, south-eastern Queensland, Australia. Using canonical correspondence analysis, each of the three sets of variables explained similar amounts of variation in fish assemblages (ranging from 44 to 52%). Variation in fish assemblages was partitioned into eight unique components: pure environmental, pure spatial, pure temporal, spatially structured environmental variation, temporally structured environmental variation, spatially structured temporal variation, the combined spatial/temporal component of environmental variation and unexplained variation. The total variation explained by these components was 65%. The combined spatial/temporal/environmental component explained the largest component (30%) of the total variation in fish assemblages, whereas pure environmental (6%), temporal (9%) and spatial (2%) effects were relatively unimportant. The high degree of intercorrelation between the three different groups of explanatory variables indicates that our understanding of the importance to fish assemblages of hydrological variation (often highlighted as the major structuring force in river systems) is dependent on the environmental context in which this role is examined.

Spatial and temporal variation of fish assemblages and their associations to habitat variables in a mountain stream of north Tiaoxi River, China

2011 ◽  
Vol 93 (3) ◽  
pp. 403-417 ◽  
Author(s):  
Jianhua Li ◽  
Liangliang Huang ◽  
Limin Zou ◽  
Yuichi Kano ◽  
Tatsuro Sato ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Fish Assemblages ◽  
Spatial And Temporal Variation ◽  
Mountain Stream ◽  
Tiaoxi River ◽  
Habitat Variables

scholarly journals Spatial and temporal variation of fish assemblages in a subtropical small stream of the Huangshan Mountain

2010 ◽  
Vol 56 (6) ◽  
pp. 670-677 ◽  
Author(s):  
Yunzhi Yan ◽  
Shan He ◽  
Ling Chu ◽  
Xiuying Xiang ◽  
Yanju Jia ◽  
...  
Keyword(s):  
Species Richness ◽  
Spatial Variation ◽  
Temporal Variation ◽  
Fish Assemblages ◽  
Spatial And Temporal Variation ◽  
Scaling Analysis ◽  
Small Stream ◽  
Study Sites ◽  
Species Richness And Abundance ◽  
Huangshan Mountain

Abstract Spatial and temporal variation of fish assemblages were investigated seasonally from May 2007 to February 2008 across 11 study sites in a subtropical small stream, the Puxi Stream, of the Huangshan Mountain. Along the longitudinal gradient from headwater to downstream, fish species richness and abundance increased gradually, but then decreased significantly at the lower reaches. The highest species richness and abundance were observed in August and the lowest in February. Based on analysis of similarities (ANOSIM), fish assemblages were significantly different in spatial variation but not in temporal variation. Although differences were observed both among sites and among stream orders, the lower R value in order-variation suggested stream order was not the optimal factor explaining the spatial variation of fish assemblages. In addition, dam construction did not significantly alter fish assemblages in the sites adjacent to and immediately downstream to dams. Using cluster analysis and non-metric Multi Dimensional Scaling analysis (NMS), assemblages were separated into three groups at a Bray-Curtis similarity value of 42%: the upper, middle and lower groups. Following analysis of similarity percentages of species contributions (SIMPER), shifts in occurrence or abundance of S. curriculus, Z. platypus, R. bitterling and A. fasciatus contributed most to the differences amongst the three groups. Standard Deviation Redundancy Analysis (RDA) suggested that habitat structure (such as elevation, substrate, and flow velocity) contributed to the spatial and temporal pattern of fish assemblages in the Puxi Stream. In conclusion, the fish assemblages in Puxi Stream presented significant spatial but not temporal variation. Human disturbance has perhaps induced the decrease in species diversity in the lower reaches. However, no significant change was observed for fish assemblages in sites far from and immediately downstream from low-head dams.

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