Linking fish and crustacean taxonomic composition with seasonal contrasts in the soft-bottom intertidal zone

Abstract The primary objective of this study was to investigate the seasonal fish and crustacean variations concerning taxonomic composition, species richness, and diversity in sandy beach habitat. For this purpose, we investigated the Sonmiani Hor lagoon area during four distinct seasons, i.e., northeast (NE) monsoon, pre-monsoon, south-west (SW) monsoon, and post-monsoon for one year. During each haul, the net was pulled about 100m along the beach in 0.5m depth. The results showed a strong linear correlation between the diversity index and equitability in fishes (r = 0.978). The diversity index was strong negatively correlated with the abundance and biomass (r = -0.978, -0.972, respectively). The physical attributes like sea surface water temperature and salinity showed a strong negative effect on species assemblages (r = -0.981 and -0.943, respectively). The mean air and water temperature illustrated approximately 3°C difference during NE and pre-monsoon seasons. However, salinity, pH, and electrical conductivity did not show any significant seasonal variabilities. Under the ecological indices, the fish species displayed higher diversity (H’ = 3.19) during SW monsoon, whereas the lowest diversity was observed during pre-monsoon (H’ = 1.58). The equitability and species richness, however, remained more noticeable during SW monsoon (J’ = 0.81). The total number of individuals of fish and crustaceans reached 4799 with 3813 fish individuals and 986 individuals of crustaceans. A total of 27 families of fish while five crustacean families comprising of 30 genera and 38 fish species while ten genera and 17 species of crustaceans were recorded. Liza subviridis displayed the highest abundance among the sampled fish species. In conclusion, fish species constituted a significant part of the coastal fauna in the study area. The seasonal variations displayed distinct variations in fish species composition and diversity.

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Watershed-level sampling effort requirements for determining riverine fish species composition

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f05-098 ◽

2005 ◽

Vol 62 (7) ◽

pp. 1580-1588 ◽

Cited By ~ 32

Author(s):

Katherine L Smith ◽

Michael L Jones

Keyword(s):

Species Richness ◽

Species Composition ◽

Fish Species ◽

Correlation Coefficients ◽

Sampling Effort ◽

Species Accumulation Curves ◽

Targeted Sampling ◽

Weak Negative Correlation ◽

Fish Species Composition ◽

Riverine Fish

Accurate assessments of watershed-level species composition are necessary for comparative ecological studies, ecosystem health assessments, monitoring, and aquatic conservation prioritization. Several studies have addressed sampling effort requirements for characterizing fish species composition at a section of stream, but none have examined watershed-level requirements. In the spring and summer of 2002, we extensively sampled nine Great Lakes watersheds to assess sampling-effort requirements. Sampling requirements increased with the targeted percentage of estimated species richness. Sampling 15119 randomly selected reaches of stream, stratified by stream order, was on average sufficient to detect 80%100% of estimated species richness. Watershed size (km2) and estimated species richness each showed a weak, negative correlation with sampling-effort requirements in our study streams, with Pearson's correlation coefficients of 5.06 and 0.590, respectively. Because of among-watershed variability in sampling effort requirements, field crews should plot species accumulation curves onsite to determine adequate inventory completion. Based on the difficulty of detecting the last 10% of species, random sampling should be conducted in conjunction with targeted sampling of rare species.

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Impact of the Low Head Dam/Barrage on Fisheries – A Case Study of Giri River of Yamuna Basin (India)

Transylvanian Review of Systematical and Ecological Research ◽

10.1515/trser-2015-0070 ◽

2015 ◽

Vol 17 (2) ◽

pp. 119-138

Author(s):

Harcharan Singh Rumana ◽

Veliachamy Jeeva ◽

Sudhir Kumar

Keyword(s):

Species Richness ◽

Relative Abundance ◽

Fish Species ◽

Habitat Heterogeneity ◽

Diversity Index ◽

River System ◽

Western Himalayas ◽

Diversity Pattern ◽

Low Head ◽

Longitudinal Stretch

Abstract Shannon’s diversity index H’ = pi log2 pi was calculated for 16 fish species. The index was resolved into its components, species richness and relative abundance, to determine which components played a larger role in the determination of diversity pattern. Changes in diversity were correlated with species richness (r), habitat heterogeneity, and hydrological regimes in a longitudinal stretch of 35 km along the river Giri, a major tributary of the Yamuna River system, in Western Himalayas. Abundance differs with change in habitat structures, habitat preference of fish species and water regimes. The decrease in diversity in the lower stretch of about 3-4 km upstream of the barrage was found to be associated with habitat fragmentation and as well as d/s with loss of biotic integrity of aquatic ecosystem due to water scarcity. Species richness was found to be maximum at upper and middle reaches (elevation 650-800 m, msl) of the river, whereas it was low in lower reaches. Change in water chemistry was also noticed at Jatan barrage-low head dam due to impoundment of river water. It is inferred that the regulation of water has an impact on species richness and relative abundance, and on habitat heterogeneity which has decreased due to the change in environmental condition.

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FISH DIVERSITY OF GHODAGHODI LAKE IN KAILALI, FAR-WEST NEPAL

Journal of Institute of Science and Technology ◽

10.3126/jist.v22i1.17762 ◽

2017 ◽

Vol 22 (1) ◽

pp. 120-126

Author(s):

Dipendra Joshi ◽

Bijaya K. C.

Keyword(s):

Species Richness ◽

Community Structure ◽

Fish Species ◽

Diversity Index ◽

Fish Diversity ◽

Channa Striatus ◽

Illegal Fishing ◽

Dominant Fish ◽

Fish Catch ◽

Excessive Proliferation

Ghodaghodi Lake is an ox-bow perennial lake of Ghodaghodi Lake Complex, situated in Kailali district. The present study was conducted to understand the fish diversity, community structure and distribution pattern in Ghodaghodi Lake. A total of 13 fish species were recorded from the different section of Ghodaghodi Lake, belonging to five order, eight family and eleven genera. According to fish catch the dominant order and family of Ghodaghodi Lake were found to be Cypriniformes (40%) and Cyprinidae (40%) respectively. The dominant fish species of Ghodaghodi Lake was Labeo gonius followed by Mystus tengara, Nandus nandus and Channa striatus. The highest diversity index (2.46), species richness (6.14) and evenness (0.96) of fish were recorded from station III during the month of January. Lowest diversity index (1.75) and evenness (0.90) was found in station II and during the month of October (2.25 and 0.88). Similarly, lowest species richness was found in station I (3.91) and during the month of July (5.82). Fish diversity and number in Ghodaghodi Lake were found to have decreased. This could be due to pollution, illegal fishing and excessive proliferation of aquatic weeds.Journal of Institute of Science and TechnologyVolume 22, Issue 1, July 2017, page: 120-126

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Short Communication: Application of artificial reefs for fisheries enhancement in Probolinggo, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d200823 ◽

2019 ◽

Vol 20 (8) ◽

Author(s):

Wahyu Isroni ◽

SYIFANIA H. SAMARA ◽

MUHAMMAD B. SANTANUMURTI

Keyword(s):

Species Composition ◽

Fish Species ◽

Short Communication ◽

Diversity Index ◽

Species Density ◽

Artificial Reefs ◽

Lates Calcarifer ◽

Dominance Index ◽

Fish Species Composition ◽

Fisheries Enhancement

Abstract. Isroni W, Samara SH, Santanumurti MB. 2019. Short Communication: Application of artificial reefs for fisheries enhancement in Probolinggo, Indonesia. Biodiversitas 20: 2273-2278. Overfishing is one of the biggest challenges in the fisheries sector in Probolinggo, Indonesia. The fish apartment (artificial reefs) was one of the solutions to increase the fish resource since it serves as the habitat for fish to live, spawn, and search for food. In this study, the fish apartment was installed in Probolinggo (Karang Katon and Dringu Beach) from 2017 to 2018. This study showed that five fish species (Caesio cuning, Acanthurus achilles, Acanthurus albipectoralis, Sphyraena jello, and Apagon novemfasciatus) were found in Karang Katon while four species (Chaetodon octofasciatus, Chromobotia macracanthus, Nemipterus japonicas, and Lates calcarifer) lived in Dringu Beach. From a total of 333 fishes, A. achilles was the species with the highest composition level of 51.65% (172) in Karang Katon station. In Dringu Beach station, C. octofasciatus had the highest fish species composition level of 46% (183) from a total of 402 fishes. The diversity index and dominance index in Karang Katon station were low at-1.280 and 0.343, respectively. The diversity index and dominance index in Dringu Beach station were also low at -1.115 and 0.3503. A. achilles had the highest density of 34.4 ind/m3 in Karang Katon station while C. octofasciatus had the highest species density of 36.6 ind/m3 in Dringu Beach Station. From this study, it could be concluded that artificial reefs application enhanced the fisheries in Probolinggo, Indonesia, and help its sustainability.

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The Diversity of Fish Species, Composition and Abundance from Bodna River in Kwali Area Council, Abuja.

NIGERIAN ANNALS OF PURE AND APPLIED SCIENCES ◽

10.46912/napas1i.2019107 ◽

2019 ◽

Vol 1 ◽

pp. 41-48

Author(s):

B M Sani ◽

R T Idowu ◽

A H Banyigyi

Keyword(s):

Species Composition ◽

Fish Species ◽

Diversity Index ◽

Sustainable Use ◽

Abundant Species ◽

Fish Distribution ◽

Wet Season ◽

Fisheries Resources ◽

Fisheries Sustainability ◽

Fish Species Composition

The Diversity of fish species, composition and abundance from Bodna River in Kwali Area Council, Abuja was studied between May 2018 to April 2019.The aim of the study was to determine the management and sustainable use of the fisheries resources of the Area council. About 1331 fish were collected from the artisanal fishermen during the study period and morphometric indices were determined using standard methods. The fish were identified and counted. Sex ratio 1:2:1 (Males to Females) was obtained indicating a male dominated population. Length –weight measurement indicated that the fish exhibited positive allometric growth pattern. The highest percentage abundant species in the site were Oreochromis niloticus with 34.8% Clarias garienpinus with 28.0% and Pellonula leonensis with 17.6% and the least occurring species were Nannocharax shariensis with 11.0% Mormyrus valenciensis with 7.7%. The seasonal variation of fish distribution was observed to be higher in the wet season with 66.2% than the dry season. Nutrient displayed greater impact on fish abundance in the wet season. The Simpson and Shannon Weiner’s diversity index values were (0.976) and (-1.456) in both richness and evenness respectively. The findings of the study could be helpful to the artisanal fishermen and the community for fisheries sustainability.

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Icthyofauna of Madhumati River at Mohammadpur, Magura

Bangladesh Journal of Zoology ◽

10.3329/bjz.v49i1.53679 ◽

2021 ◽

Vol 49 (1) ◽

pp. 19-34

Author(s):

Md Anichur Rahman ◽

AHM Shafiullah Habib ◽

Shova Saha ◽

Mallika Saha

Keyword(s):

Fish Species ◽

Diversity Index ◽

Fish Fauna ◽

Fresh Water Fish ◽

Exotic Fish ◽

Water Fish ◽

Data Deficient ◽

Fish Species Composition ◽

Richness Index ◽

Near Threatened

The investigation was conducted on the present situation of fish biodiversity and abundance of fish fauna at two different points of Madhumati River at Mohammadpur upazilla under Magura district from October 2018 to September 2019. A total of 83 species of fresh water fish species were recorded belonging to 58 genera of 28 families under 11 orders. Cypriniformes was recorded as the dominant order comprising 26 species constituting 31% of the total. According to IUCN 59% of fish species were Least Concern, 12% were Vulnerable, 11% were Endangered, 9% were Near Threatened, 1% of each were Data Deficient and Critically Endangered locally, and 7% Exotic fish species were also enlisted. Annual value of Shannon diversity index (H) was 1.974 and Sipmson diversity index (λ) was 0.272 which indicate highest diversity of fish was in March. Annual Margalef’s richness index (D) was 6.654 and Pielou’s evenness index (E) was 0.447 denote highest richness was in November and evenness was in March. The river was found to have moderate type of diversity in terms fish species composition. Bangladesh J. Zool. 49(1): 19-34, 2021

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Changes in a Fish Community in a Small River Related to the Appearance of the Invasive Topmouth Gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846)

Water ◽

10.3390/w11091857 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1857

Author(s):

Jacek Rechulicz

Keyword(s):

Species Richness ◽

Fish Species ◽

Native Species ◽

Salmo Trutta ◽

Diversity Index ◽

Predatory Fish ◽

Total Density ◽

Pseudorasbora Parva ◽

Topmouth Gudgeon ◽

Invasive Fishes

In recent years, the topmouth gudgeon (Pseudorasbora parva) has been one of the most invasive fishes in Europe. Pseudorasbora parva can potentially affect ecosystems, fish communities, and particular fish species. Electrofishing was carried out over a five-year period at three study sites in the Ciemięga River (eastern Poland) before and after P. parva had been found in the river. Changes in the occurrence, abundance, and density of native fish species after the appearance of the invader were determined. Changes in the species’ richness were calculated, and correlations were estimated between the occurrence and density of P. parva and particular fish species and richness indices. The presence of P. parva has not affected the density of native species but coincides with a significant increase in estimated species richness and the total density of fish. There was a significant relationship between the presence of this invasive species and the fish community’s composition, though the PERMANOVA result was unclear with regards to site-specific effects. Moreover, tench and bleak were associated positively, whereas Eurasian perch and sunbleak were associated negatively with the occurrence of P. parva. Pseudorasbora parva density was highly correlated with Cyprinidae density (excluding P. parva), species richness, and the Margalef diversity index. Thise study has shown that the presence of predatory fish in the river (Salmo trutta L.) may reduce the numbers of invasive P. parva.

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The Dynamic of Phytoplankton Community Structure in Face of Warming Climate in A Tropical Man-Made Lake

Biosaintifika Journal of Biology & Biology Education ◽

10.15294/biosaintifika.v9i1.7725 ◽

2017 ◽

Vol 9 (1) ◽

pp. 140 ◽

Cited By ~ 1

Author(s):

Sunardi Sunardi ◽

Rina Febriani ◽

Budi Irawan ◽

Mutia Septi Saputri

Keyword(s):

Species Richness ◽

Community Structure ◽

Water Temperature ◽

Climate Warming ◽

Phytoplankton Community ◽

Diversity Index ◽

Freshwater Ecosystems ◽

Phytoplankton Community Structure ◽

And Function ◽

The Impact

<p>In freshwater ecosystems, water temperature plays as an environmental factor that regulates its structure and function. A research on the impacts of changes in temperature to the dynamics of the Phytoplankton community structure has been done. Data from nineteen-year period (1995 to 2013) were collected from Cirata Reservoir as an example of artificial tropical lake in Indonesia. The research aimed to determine the changes of water temperature as the impact of climate warming on the dynamics of phytoplankton community structure. Different measures such as species richness, diversity index, and abundance were measured in order to understand the changes of phytoplankton community structure. Trend analysis, linear regression, and correlation were applied to achieve our objective. The study revealed that changes in water temperature have affected the species richness, but not the diversity index and abundance of the phytoplankton. Bacilariophyceae and Cyanophyceae were found as two predominant phytoplankton classes in the lake with percentage of 48,45 and 41,43 respectively, assuming their capacity to adapt the new environment. This study suggests that climate warming implies changes of the freshwater ecosystems.</p>

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Ichthyofaunal composition and diversity of Stubbs Creek, Ibeno, in Akwa Ibom State, Nigeria

Brazilian Journal of Biological Sciences ◽

10.21472/bjbs(2020)071705 ◽

2020 ◽

Vol 7 (17) ◽

pp. 297-303

Author(s):

Henry Robert Anwan ◽

Martins Agenuma Anetekhai

Keyword(s):

Species Richness ◽

Fish Species ◽

Diversity Index ◽

Landing Site ◽

Descriptive Statistics ◽

Identification Guide ◽

Fish Samples ◽

Landing Sites ◽

Ecosystem Diversity ◽

Abundance And Distribution

The fish abundance and distribution of Stubbs Creek were examined in order to provide information for the management and sustainable exploitation of the ecosystem services. Fish samples obtained from the fishermen landing sites were identified using FAO species identification guide. Data were analyzed using descriptive statistics. Species diversity and community abundance were determined using Shannon-Weiver diversity index (H) and Margalef's species richness (d). Twenty nine fish species, twenty two genera in nineteen families and eight orders were identified from the three landing stations during the study. Station 1 (Iwokpom) recorded the highest taxa (24) consisting of 993 fishes (43.14%) of the total catch. Landing site 2 (Iwuchang) and 3 (Ubenekang) both recorded 22 taxa each comprising 556 (24.15%) and 753 (32.71%) fishes, respectively. Iwokpom recorded the highest diversity in fish species d = 3.333, but the lowest general ecosystem diversity (H = 2.781). Ubenekang (Station 3) had the lowest species richness d = 3.17, but recorded the highest biodiversity (H = 2.839) in the study. Evenness was generally high among the stations but Iwopom recorded the lowest value of e = 0.6722 and Ubenekang had the highest, e = 0.7769. Iwuchang (Station 2) came next to Iwopon in species richness d = 3.322, but was next to Ubenekang in general diversity (H = 2.833) and evenness e = 0.7725, respectively. The present study indicated that stub creek is rich in fish biodiversity. Therefore users of this water body should maintain responsible fishing activities in order to conserve this biodiversity.

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