Spatial and temporal variability of fish communities of the Upper Mississippi River, USA

2009 ◽  
Vol 59 (1) ◽  
pp. 67-85 ◽  
Author(s):  
Ayhan Yildirim ◽  
Mark Pegg
Keyword(s):  
Life History ◽  
Community Structure ◽  
Mississippi River ◽  
Fish Community ◽  
Fish Communities ◽  
Morphological Characteristics ◽  
River System ◽  
Functional Composition ◽  
Upper Mississippi River ◽  
Fish Community Structure

AbstractFish community structure, morphological characteristics, functional composition, and life history attributes in relation to three aquatic habitats, backwater shoreline (BWS), main channel borders (MCB), and side channel borders (SCB) in Pool 4 of the Upper Mississippi River System (UMRS) were assessed. Fish communities were sampled annually using standardized electrofishing techniques from 1994 to 2004. We found significant differences in community composition and abundance, and the clearest pattern was that diversity and fish community structure in BWS were different from those in both MCB and SCB. We also found morphological characteristics, functional composition, and life-history differences among the habitats, with fish communities from BWS having a number of different characteristics from both MCB and SCB. Temporal changes in fish abundance, community structure, morphological, functional and life-history attributes from each habitat may reflect both human impact and environmental factors on the Upper Mississippi River System.

scholarly journals Influence of a high‐head dam as a dispersal barrier to fish community structure of the Upper Mississippi River

2019 ◽  
Vol 36 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Rebekah L. Anderson ◽  
Cory A. Anderson ◽  
James H. Larson ◽  
Brent Knights ◽  
Jon Vallazza ◽  
...  
Keyword(s):  
Community Structure ◽  
Mississippi River ◽  
Fish Community ◽  
Upper Mississippi River ◽  
Fish Community Structure ◽  
Dispersal Barrier ◽  
High Head

scholarly journals Community structure and niche breadth of some fish in Pangelang Protected Lake, Kapuas Hulu District

2021 ◽  
Vol 21 (2) ◽  
pp. 105-115
Author(s):  
Sri Endah Purnamaningtyas ◽  
Dimas Angga Hedianto ◽  
Nurfiarini Nurfiarini
Keyword(s):  
Community Structure ◽  
Fish Community ◽  
Niche Breadth ◽  
Fish Communities ◽  
Food Preferences ◽  
Survey Method ◽  
Fish Community Structure ◽  
Regional Patterns ◽  
Weather Changes ◽  
Detritivorous Fish

Ecologically, weather changes cause local deviations from regional patterns in waters. So that there will be changes in fish types and food habits.The purpose of this study was to determine changes in fish community structure, food preferences, and area of niches for each type of fish in Pangelang Protected Lake. The research was conducted using a survey method in October 2016 (low tide), June 2018 (transition) and September (flood) 2018. The results obtained: 1. Fish communities in Lake Pangelang obtained a total of 12 families, 30 genera, and 37 species. In the low tide season, there are 21 species of fish caught, 17 species of transition season and 16 types of flood during low tide. 2. In the low tide season, the fish community in Pangelang Lake is dominated by detritivorous fish. In the transitional season, the fish community in Pangelang Lake experiences changes with an increase in the union of phytoplanktivore and insectivore fish. During the flood season, the fish communities in Lake Pangelang underwent a change again where the union of herbivores that used plants increased.

scholarly journals Fish Community Structure in Seagrass Beds of Doreri Bay Manokwari Regency

2020 ◽  
pp. 17-29
Author(s):  
Wilhelmus Reinaldo Pattipeilohy ◽  
Thomas Frans Pattiasina ◽  
Simon Petrus Octavianus Leatemia ◽  
Selfanie Talakua
Keyword(s):  
Community Structure ◽  
Coastal Waters ◽  
Fish Community ◽  
Fish Communities ◽  
Seagrass Beds ◽  
Fish Community Structure ◽  
Fish Resources ◽  
Seagrass Ecosystems ◽  
Observation Times ◽  
Descriptive Method

One of the coastal ecosystems that has a high primary productivity, seagrass, makes it a places to find foods (feeding ground), spawn (spawning ground), and shelter for most fish. Whether the structure of fish communities on seagrass beds in the coastal waters of Doreri Bay based on day and night observation times is different from previous studies. This study aims to examine the structure of fish communities on seagrass beds in the coastal waters of Doreri Bay, between the time of observation and compared to previous studies. Data collection takes place during April-May 2019. The method used in this study is a descriptive method, using 1 and 1.5 inch gills net. The results of the study found that seagrass beds in Doreri Bay waters were more than in previous studies, which consisted of 10 species of seagrasses from 2 families (Hydrocharitaceae and Cymodoceaceae). The composition of fish is 56 species with a total of 91 individuals during the day and 189 individuals at night. Fish community structure in Doreri Bay waters has moderate diversity and uniformity while low dominance. Efforts should be made to protect seagrass ecosystems so that fish resources in the Doreri Bay region are maintained.

Influence of Tributary Spatial Position on the Structure of Warmwater Fish Communities

1992 ◽  
Vol 49 (4) ◽  
pp. 671-681 ◽  
Author(s):  
Lewis L. Osborne ◽  
Michael J. Wiley
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Fish Species ◽  
Fish Community ◽  
Fish Communities ◽  
Drainage Area ◽  
Physical Habitat ◽  
Drainage Network ◽  
Fish Community Structure ◽  
Stream Size

We found a significant and positive relationship between fish species richness and four measures of stream size (drainage area, stream order, link magnitude, and downstream link) in three Illinois drainage basins. Downstream link (incorporating both stream size and size of stream at the next downstream confluence) explained the greatest portion of the variance. This suggests that downstream processes significantly influence the structure of fish communities inhabiting warmwater streams. Significantly higher numbers of fish species were collected from tributary streams (< 259 km2 drainage area) located lower in a drainage network and connected to a main channel system than from similarly sized streams located in the headwaters of a drainage network. The difference in species richness among station treatments was not due to a difference in the number of individuals collected among treatments. We were unable to accept or reject the hypothesis that differences in fish species richness were due to differences in physical habitat. The immigration–extinction hypothesis appears to provide a plausible explanation for the observed pattern in fish community structure within a drainage. The location of a stream channel within a network may provide a general template for fish community structure in warmwater drainages by regulating potential species richness.

scholarly journals STRUKTUR KOMUNITAS IKAN PADA EKOSISTEM MANGROVE DI DESA BASULE KECAMATAN LASOLO KABUPATEN KONAWE UTARA

2019 ◽  
Vol 19 (2) ◽  
pp. 282
Author(s):  
Sandra Nolan ◽  
Muhammad Ramli ◽  
Bahtiar Bahtiar
Keyword(s):  
Community Structure ◽  
Fish Community ◽  
Fish Communities ◽  
Oreochromis Mossambicus ◽  
Mangrove Ecosystem ◽  
Fish Community Structure ◽  
Chanos Chanos ◽  
Scatophagus Argus ◽  
Mangrove Area ◽  
Group I

Abstrak : Desa Basule memiliki potensi ekosistem mangrove yang terus mengalami penerunan kualitas dan kuantitas sejalan dengan terus meningkatnya penangkapan yang merusak dan terus menurunnya komonitas ikan di daerah ekosistem mangrove, sehingga perlu dilakukan penelitian tentang kondisi sumber daya ikan yang terdapat di perairan tersebut sehingga dapat menjadi suatu informasi ilmiah yang berguna untuk pengelolaannya. Penelitian ini bertujuan untuk mengetahui komposisi ikan, menganalisa struktur komunitas ikan hubungannya dengan aspek fisika-kimia perairan di kawasan mangrove Desa Basule. Penelitian ini berlangsung selama 3 bulan bertempat di kawasan ekosistem mangrove Desa Basule. Stasiun penelitian ditentukan berdasarkan kerapatan mangrove dengan menentukan daerah mangrove kondisi tutupan padat, sedang dan jarang. Data yang dianalisis meliputi: indeks nilai penting mangrove, komposisi jenis ikan, struktur komunitas ikan dan analisis korelasi (PCA dan CA). Selama penelitian jumlah total ikan yang berhasil diidentifikasi dari ketiga stasiun di daerah ekosostem mangrove sebanyak 17 jenis dari 14 famili dan 14 genus. Nilai keanekaragaman tergolong rendah sampai sedang dengan kisaran 0,580-1,552, nilai keseragaman tergolong rendah dengan kisaran 0,130-0336 dan nilai dominansi tergolong ada dan tidak ada dominansi dengan kisaran 0,309-0,732. Hasil analisis PCA menjelaskan bahwa parameter lingkungan yang menjadi penciri adalah parameter salinitas (0,81), DO (0,97), nitrat (0,97) dan suhu  (0,81).  Hasil analisis CA ditemukan 3 kelompok. Kelompok I dicirikan oleh Chanos-chanos, Leiognatus sp, Parupeneus sp, Sphyraena genie, Tylosurus crocodilus dan Bibisa. Kelompok II dicirikan oleh Caranx sexfasciatus, Saurida tumbil, Periopthalmus argentiliniatus, Oreochromis mossambicus, Scatophagus argus dan Therapon theraps. Kelompok III dicirikan oleh Gires filementous, Girres oyena, Valamugil speigteri, Lutjanus sp dan Kooko.Kata Kunci : Ekosistem Mangrove, Struktur Komunitas Ikan, Korelasi, Desa Basule Abstract : Basule Village had a potential of mangrove ecosystems which continued in decreasing of quality and quantity in line with the increasing of destructive fishing and also declining of fish communities in the mangrove ecosystem area, so researcher needed to conduct the research about the condition of fish resources in the waters of Basule Village so that it can become a scientific information which was useful for management. This research aimed to determine the composition of fish and analyzed the structure of fish communities in relation with the physical-chemical aspects of waters in the mangrove area of Basule Village. This research was conducted for 3 months which located in the mangrove ecosystem area of Besule Village. The research station was determined based on the density of mangroves by determining the conditions of solid, medium, and rare cover in the mangrove area. Data analysis included the important of index value of mangrove, the composition of fish species, fish community structure, and correlation analysis (PCA and CA). During the research, the total number of fish that identified from the three stations in the mangrove ecosystem area was 17 species from 14 families and 14 genera. The diversity value was classified as low to moderate with a range of 0.580-1.552, the uniformity value was classified as low with a range of 0.130-0.336 and the dominance value was classified as there was dominance and there was no dominance in the range of 0.309-0.732. The results of the PCA analysis explained that the environmental parameters that identified were salinity (0.81), DO (0.97), nitrate (0.97) and temperature (0.81) parameters. The results of CA analysis found 3 groups. Group I was characterized by Chanos-chanos, Leiognatus sp, Parupeneus sp, Sphyraena Genie, Tylosurus Crocodilus and Bibisa. Group II was characterized by Caranx Sexfasciatus, Saurida Tumbil, Periopthalmus Argentiliniatus, Oreochromis Mossambicus, Scatophagus Argus and Therapon Theraps. Group III was characterized by Filementous Gires, Girres Oyena, Valamugil Speigteri, Lutjanus sp and Kooko. Keywords : Mangrove Ecosystem, Fish Community Structure, Correlation, Basule Village

scholarly journals Invasive lionfish had no measurable effect on prey fish community structure across the Belizean Barrier Reef

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3270 ◽  
Author(s):  
Serena Hackerott ◽  
Abel Valdivia ◽  
Courtney E. Cox ◽  
Nyssa J. Silbiger ◽  
John F. Bruno
Keyword(s):  
Community Structure ◽  
Reef Fish ◽  
Fish Community ◽  
Fish Communities ◽  
Reef Fishes ◽  
Barrier Reef ◽  
Fish Community Structure ◽  
Prey Fish ◽  
Invasive Lionfish ◽  
Study Sites

Invasive lionfish are assumed to significantly affect Caribbean reef fish communities. However, evidence of lionfish effects on native reef fishes is based on uncontrolled observational studies or small-scale, unrepresentative experiments, with findings ranging from no effect to large effects on prey density and richness. Moreover, whether lionfish affect populations and communities of native reef fishes at larger, management-relevant scales is unknown. The purpose of this study was to assess the effects of lionfish on coral reef prey fish communities in a natural complex reef system. We quantified lionfish and the density, richness, and composition of native prey fishes (0–10 cm total length) at sixteen reefs along ∼250 km of the Belize Barrier Reef from 2009 to 2013. Lionfish invaded our study sites during this four-year longitudinal study, thus our sampling included fish community structure before and after our sites were invaded, i.e., we employed a modified BACI design. We found no evidence that lionfish measurably affected the density, richness, or composition of prey fishes. It is possible that higher lionfish densities are necessary to detect an effect of lionfish on prey populations at this relatively large spatial scale. Alternatively, negative effects of lionfish on prey could be small, essentially undetectable, and ecologically insignificant at our study sites. Other factors that influence the dynamics of reef fish populations including reef complexity, resource availability, recruitment, predation, and fishing could swamp any effects of lionfish on prey populations.

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