scholarly journals Reproducibility of the multi-component aspect of species diversity across different areas and scales: towards the constitution of a shortlist of complementary indices for monitoring fish diversity?

Ecography ◽  
2010 ◽  
Vol 33 (6) ◽  
pp. 1123-1135 ◽  
Author(s):  
Jean-Claude Gaertner ◽  
Bastien Mérigot ◽  
Giulio Rélini ◽  
Jacques A. Bertrand ◽  
Nabila Mazouni ◽  
...  
2020 ◽  
Vol 8 (2) ◽  
pp. 052-064
Author(s):  
Aline Horodesky ◽  
Gisela Geraldine Castilho-Westphal ◽  
Diogo Barbalho Hungria ◽  
Durval Nascimento ◽  
Eduardo Ratton ◽  
...  

We evaluated fish diversity in three tributaries of the São Francisco River, one of the largest watercourses in Brazil. The study site is in the sub-basin of the Carinhanha River [Carinhanha, Cocos (I and II) and Itaguari Rivers], located in the South region of the Bahia state. These rivers are crossed by bridges of the federal highway BR-135. After sampling, upstream and downstream from each bridge, during drought and rain seasons, 3,520 specimens of fish (57 species, 21 families) were captured. The species with highest occurrence were Astyanax cf. taeniatus, Serrapinnus heterodon, Astyanax bimaculatus and Astyanax cf. rivularis. During drought season, the number of specimens captured was higher, leading to an increase of species dominance. In the rainy season, species diversity was higher with a greater distribution of individuals among species. The data indicate the maintenance of the fish faunal structure despite anthropogenic activities on the studied areas.


Author(s):  
Nigel Downing ◽  
Raymond Buckley ◽  
Ben Stobart ◽  
Larry LeClair ◽  
Kristian Teleki

Quantitative surveys of fish-species diversity were undertaken at 10 m and 20 m water depth on the outer reef at Aldabra Atoll, southern Seychelles, between November 1999 and May 2003. No significant changes in total fish-species diversity, numbers of families represented by these species, or numbers of pomacentrid or chaetodontid species were seen, contrary to fish-diversity changes seen on coral bleaching-impacted reefs elsewhere. The lack of additional anthropogenic pressures at remote Aldabara may make this system, and others like it, more tolerant of bleaching-related population changes.


2017 ◽  
Vol 45 (1) ◽  
pp. 11-26
Author(s):  
Mohammad Abdul Baki ◽  
Md Muzammel Hossain ◽  
Naser Ahmed Bhouiyan ◽  
Md Asaduzzaman

Fish species, fishing gear and crafts in the most polluted river Buriganga were inventorial. During December, 2012 to November, 2013, a total of 56 fish species belonging to 20 families and 9 orders were recorded. Cypriniformes observed to be the most dominant order with 18 species (32%). The highest fish diversity was recorded during monsoon season, and lowest during winter. Maximum diversity variance (7.616 ± 2.76 Sd) observed in the monsoon season for 56 species (220 individuals). Also 12 different types of gears of two categories (active and passive) and two types of crafts were observed to be used for fishing in the study area. The highest number of species of fishes (n = 56) recorded in August and lowest (n = 3) in April and May 2013. Strong correlation between water depth and number of fish species (r = 0.74) and fishing activities (r = 0.96) was observed.Bangladesh J. Zool. 45(1): 11-26, 2017


2020 ◽  
Vol 12 (15) ◽  
pp. 17077-17092
Author(s):  
Kannan K. ◽  
J.A. Johnson

This article describes fish diversity in streams and rivers of Kalakad-Mundanthurai Tiger Reserve (KMTR), Tamil Nadu.  Fifty species of fishes belonging to 10 orders, 15 families, and 32 genera are recorded.  Seven species, Garra joshuai, G. kalakadensis, Haludaria kannikattiensis, Hypselobarbus tamiraparaniei Mesonemachilus tambraparniensis, Neolissochilus tamiraparaniensis, and Dawkinsia tambraparniei are strictly endemic to this protected area.  The minnows, Devario aequipinnatus, Garra mullya, and G. kalakadensis are widely distributed in KMTR streams.  High species diversity (H’=2.81) was recorded in Gadana River, whereas low species diversity (H’=0.61) was registered in Poonkulam area.  Bray-Curtis similarity analysis showed that sites along the headwater streams have similar faunal assemblage.  Result of regression analysis revealed that there is a significant pattern explained between stream order and species richness (r2=0.86; p<0.05).  Among 50 species, four (Garra kalakadensis, G. joshuai, Dawkinsia tambraparniei, and Tor malabaricus) are listed in threatened categories of IUCN Red List.  Important threats faced by endemic species and their management strategies are discussed.


2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Zairion Zairion ◽  
Iya Purnama ◽  
Yusli Wardiatno

Abstrak— Penelitian ini dilakukan dengan tujuan untuk mengidentifikasi keragaman dan komposisi ikan non-target perikanan rajungan dengan alat tangkap jaring insang dasar. Sampel dikumpulkan dari bulan Juni hingga Oktober 2017 di Labuan Maringgai dan Kuala Penet, Pesisir Timur Lampung. Hasil penelitian menunjukkan 21 ikan non-target yang diidentifikasi di Labuan Maringgai dan Kuala Penet memiliki kesamaan spesies. Labuan Maringgai, 15 spesies (11,40%) ikan non-target termasuk retained species dimanfaatkan untuk konsumsi atau dijual kembali dan 6 spesies (0,89%) termasuk discarded species. Sementara di Kuala Penet, 14 spesies (8,76%) retained dan 7 spesies (1,28%) discarded species. Hasil penelitian ini membantu untuk mengklarifikasi keragaman ikan non-target yang ditemukan dari perikanan jaring insang dasar di Pesisir Lampung Timur.Kata kunci : discarded, rajungan, retainedAbstract—The study was conducted with the aim to identifying non-target fish diversity and composition from blue swimming crab set gill-net fishery. Samples were collected from June to October 2017 at Labuan Maringgai and Kuala Penet, East Lampung Coastal. The results showed that 21 non-target fish obtained from Labuan Maringgai and Kuala Penet areas were similar in terms of species diversity.. In Labuan Maringgai area 15 species (11.40%) of non-target fish were retained either as own consumption or marketing and 6 species (0.89%) were discarded. While In Kuala Penet area, 14 species (8.76%) were retained and 7 species (1.28%) were discarded. The result of this study helps to clarify diversity of non-target fish found from set gill-net fisheries in East Lampung Coastal.Keywords : blue swimming crab, discarded, retained


2013 ◽  
Vol 5 (2) ◽  
pp. 369-374 ◽  
Author(s):  
Gurnam Singh ◽  
N. K. Agarwal

Laster stream is a major tributary of river Mandakini, which in turn is a major tributary of river Alaknanda. Stream traverses a distance of ~40 km before joining with river Mandakini at Suryaprayag (Tilwara) in Rudraprayag district (Uttarakhand), India. Present study reports existence of twenty one indigenous fish species belonging to eight genera, three families and two orders from the Laster stream. Schizothorax richardsonii (Cyprinidae family) was the dominating species followed by S. plagiostomus, Barilius sp., Tor sp., Noemacheilus sp., Pseudecheneis sp., Glyptothorax sp. The distribution pattern (diversity and abundance) of these species had negative co-relation with the increase in stream altitude. Habitat conditions in the stream varied considerably from headwater to main stream. Present study also describes the habitat specificity of fish assemblage. Maximum species diversity (18 species) was recorded from pool habitat and was the most preferred habitat. Least species diversity (09 species) was recorded from cascade habitat. Riffle and rapid habitat recorded no difference in species diversity.


2018 ◽  
Vol 8 (5-s) ◽  
pp. 327-328
Author(s):  
Nishi Kumari ◽  
Ravindra Nath Pathak

The present study has been carried from Bhusara maun under Muzaaffarpur district of Bihar”. Fish diversity on this lentic water body has been studied in detail with its food value and commercial status. Twenty eight Fish species of fishes were recorded, which belonged to 20 genera and 14 families. A classified list of fishes has been given. The Indian major carps and few fresh species are commercially important groups in the Bhusara maun Keywords: Fish species, diversity, food value. Commercially important. 


Sainteks ◽  
2021 ◽  
Vol 18 (1) ◽  
pp. 25
Author(s):  
Susanto Susanto ◽  
Muhammad Azharul Rijal

This research was purposed to reveal and discover fish community in Pelus River, Banyumas Residency. It includes: (1) water quality which include physical and chemical parameters and plankton species variation, (2) Fish diversity, (3) Fish age structure was based weight and total length. Research done by survey methods, with purposive random sampling methode. The research was conducted in Pelus River Region of Banyumas Residency, which were location one (upstream of Pelus River), location two (middlestream of Pelus River), and location three (downstream of Pelus River). This Research applied survey method, with purposive random sampling technique. Research was done in eight months which replicated every month, since December 2016 untill May 2017. Result indicated that nesearch fishes caught were as many as 544 fishes divided to 18 Species, eight Family and five Ordo. Water quality factor including aquatic physical and chemical parameters, which were temperature, flowrate, clarity, dissolved oxygen and pH and bilogical parameter (plankton)  variation in Pelus River Banyumas Residency were in good condition and suitable for fish life. Cyprinidae Family found as most variated species and most founded spesies in individual number at Pelus River Banyumas Residency. There were low species diversity, but there weren’t found any dominancies. Fish species diversity in Pelus river low. Age structure shows the condition of fish in Pelus River of Banyumas regency is in a vulnerable condition, so it needs attention in order to conserve fish species. Keywords: Fish diversity, age structure, Pelus river, Banyumas


Author(s):  
Nuril Ahmad ◽  
Luchman Hakim ◽  
Catur Retnaningdyah ◽  
Bagyo Yanuwiadi

The purpose of this study is to describe the presence of species diversity and composition in Bratas River. Fish sampling was conducted in dry and rainy seasons in five locations, namely Batu City, Blitar City, Tulungagung regency, Jombang Regency, and Mojokerto Regency, East Java. This study collected 295 individual fishes belonging to 12 species. The 162 individuals were obtained in the dry season, while 133 individuals were captured in rainy season. The most dominant species was mujahir (Oreochromis mosambica) followed by keting (Mystus paniceps) and kutuk (Channa striata). The fish abundance significantly varied among study sites, while that of species richness and diversity did not differ significantly. Fish diversity in high elevation was the lowest, while that in relatively middle elevation was the highest. Compared to the previous report, fish species diversity in Brantas was decreasing, some species were not found. Three species were considered as exotic include Oreochromis mosambica, Clarias batracus, Oreochromis niloticus.


2020 ◽  
Vol 78 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Mir Mohammad Ali ◽  
Md. Lokman Ali ◽  
Md. Jalilur Rahman ◽  
Md. Abdul Wahab

AbstractLoss of fish biodiversity, especially in the inland and coastal areas, is a major concern in sustainable fish production. Indiscriminate fish catch, climate change and many other anthropogenic activities synergistically affect fish biodiversity. To formulate a sustainable fish biodiversity conservation plan, fish biodiversity in the Andharmanik River, a 40-km-long Hilsa shad sanctuary in the southern part of Bangladesh, was assessed. The study was conducted to understand the status of fish species diversity through sampling in three sampling stations between December 2014 and November 2015. A total of 93 fish species were found belonging to 66 genera, 45 families and 14 orders. Perciformes (27.65%) was found to be the most dominant order, followed by Cypriniformes (20.21%), Siluriformes (21.28%) Clupeiformes (7.45%) Mastacembeliformes (4.26%) and Channiformes (4.26%). Out of the 93 fish species of the river, the percentage compositions of the vulnerable, endangered, critically endangered and not threatened were found to be 14%, 11%, 6% and 59%, respectively. Four population indices viz. Shannon-Wiener’s diversity index (H), Simpson’s dominance index (D), Simpson’s index of diversity (1-D) and Margalef’s index (d) were applied to demonstrate species diversity, richness and evenness of fish species in sampling areas, and the overall values of the indices were 2.70-3.51, 0.10-0.12, 0.88-0.90 and 7.84-8.19, respectively. The main threats to fish biodiversity were reviewed and the measures for fish biodiversity conservation of the river recommended. Indiscriminate fishing using biodiversity destructive gears, as well as losing hydrological and ecological connectivity with the surrounding habitats, were identified as major threats to biodiversity in the Andharmanik River. Effective sanctuary-based co-management, immediate actions for habitat enhancement to conserve and improve fish biodiversity in the river were recommended. Necessary steps to improve hydrological and ecological connectivity for habitat protection and elimination of all destructive fishing gears in order to conserve biodiversity in the Andharmanik River were also suggested.


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