scholarly journals Vertebrate wildlife diversity of Sreepur upazila, Magura, Bangladesh

2022 ◽  
Vol 7 (1) ◽  
pp. 51-62
Author(s):  
AK Mandal ◽  
MF Jaman ◽  
MM Alam ◽  
MF Rabbe ◽  
AR Shome
Keyword(s):  
Species Diversity ◽  
Management Plan ◽  
Scientific Study ◽  
Wildlife Species ◽  
Number Of Species ◽  
Total Species ◽  
Conservation And Management ◽  
Near Threatened

The species diversity and abundance of wildlife are the important indicators of a healthy ecosystem. A survey-based scientific study on species diversity, abundance and status of vertebrate wildlife was conducted from May 2015 to April 2016 at Sreepur upazila, Magura, Bangladesh. A total of 123 species of vertebrate wildlife was recorded during the 12 months of study period. Among them, eight species (6.5%) were amphibians, 13 (10.57%) reptiles, 84 (68.29%) birds and 18 species (14.64%) were mammals. Out of 84 species of birds, 45 (53.57%) were passerines and 39 (46.43%) non-passerines. Most of the observed birds (72 species, 85.72%) were resident and the rest 12 species (14.28%) were migratory. The highest number of wildlife species was observed in winter (108 species, 87.80%), particularly in December (62 species, 50.40%). The lowest number of species was recorded in June (33 species, 26.83%). Out of 123 species of vertebrate wildlife, three (2.44%) were very common, nine (7.32%) common, 26 (21.14%) fairly common and 85 (69.1%) were common. Of the total species, 117 (95.12%) species were least concern, five (4.06%) near threatened and one (0.81%) was endangered according to IUCN Bangladesh 2015. Implementation of conservation and management plan is required to save the wildlife in the study area. J. Biodivers. Conserv. Bioresour. Manag. 2021, 7(1): 51-62

Species Diversity, Abundance and Habitat Distribution of Anurans in Mts. Palay-Palay Mataas-Na-Gulod Protected Landscape, Luzon Island, Philippines

2017 ◽  
Vol 10 ◽  
Keyword(s):  
Species Diversity ◽  
New Records ◽  
Management Plan ◽  
The Philippines ◽  
Sampling Time ◽  
Ecological Data ◽  
Total Species Richness ◽  
Transect Sampling ◽  
Total Species ◽  
Effective Conservation

Mt. Palay-Palay is Cavite’s only protected landscape and yet very few herpetological studies have been done in this area. Thus, the study aims to provide robust ecological data on different anuran species so that an effective conservation and management plan could be formulated. Five habitats were sampled using a combination of cruising transect, stratified random strip transect sampling, time-constrained searches, visual encounter survey (VES) and acoustic encounter survey (AES). A total of 1528 individuals belonging to 12 species was recorded from the study area. In addition to previous works, 2 Platymantis spp. were new records bringing the total species richness to 16. Of the 16 species, 10 (62.5%) are endemic to the Philippines. Among the species, Platymantis mimulus was the most abundant and also had the highest density of 174 frogs ha-1. Among the habitats riparian forests had highest species diversity, Mau Tao and Jackknife1 values which showed dependence of anurans on water. Of the 17 microhabitats, forest floor litter was the most occupied by anurans.

scholarly journals Species diversity, taxon structure and distribution of the Chlorophytes on Truong Sa archipelago

2020 ◽  
Vol 20 (4) ◽  
pp. 427-436
Author(s):  
Dam Duc Tien ◽  
Nguyen Thi Thu Hang ◽  
Phan Thu Hue ◽  
Tran Dinh Lan
Keyword(s):  
Species Diversity ◽  
Intertidal Zone ◽  
Similarity Coefficient ◽  
Subtidal Zone ◽  
Number Of Species ◽  
Total Species

The results of research on characteristic of distribution and taxa structure of Chlorophytes (Chlorophyta) at nine islands of Truong Sa archipelago (Truong Sa, Da Tay, Thuyen Chai, Toc Tan, Sinh Ton, Nam Yet, Song Tu Tay, Da Nam and Son Ca) indicate that there are 67 species of Chlorophytes, they belong to 4 orders, 14 families and 22 genera. The number of species at the sampling islands ranged from 13 species/island (Toc Tan isd.) to 43 species/island (Nam Yet isd.) with the average of 25.5 species/island. Sorensen similarity coefficient at the sampling sections ranged from 0.24 (between Song Tu Tay and Thuyen Chai) to 0.74 (between Nam Yet and Song Tu Tay) with the average of 0.45. Among 67 species in nine islands, there are 10 species distributed only in the intertidal zone (they are occupying 14.9% of total species), 14 species (31.4%) in subtidal zone only and 43 species (64.2%) in both intertidal zone and subtidal zone. The number of species concentrates on some genera (Halimeda: 10 species; Caulerpa: 10 species; Codium: 6 species,...), they belong to Codiacea, Siphonales. There are some genera with only 1 species (Tydemania, Anadyomene, Microdictyon,...).

scholarly journals Taxonomic structure of the flora of Male Opillya

2021 ◽  
Vol 78 (1) ◽  
pp. 32-38
Author(s):  
M. Seniv ◽  
◽  
L. Tasenkevich ◽  
Keyword(s):  
Species Diversity ◽  
Characteristic Feature ◽  
Plant Diversity ◽  
Vascular Plants ◽  
Single Species ◽  
Taxonomic Diversity ◽  
Taxonomic Structure ◽  
Number Of Species ◽  
Western Ukraine ◽  
Total Species

The article provides information on the flora of Male Opillya, the southwesternmost part of the Opillya area, Western Ukraine. The ecological and geographical peculiarities of the area determine its rich plant diversity. The flora of Male Opillya comprises 1325 species of vascular plants belonging to 511 genera, 95 families and five divisions. A characteristic feature of the flora of this area is a small number of vascular cryptogamic plants and gymnosperms – 27 species, or 2.04% of the total number of species of vascular plants. The division Magnoliophyta consists of 1298 species (97.96%), of them Liliopsida accounts for 21.21% and Magnoliopsida – 76.75%. Taxonomic diversity of the flora is characterized by the following proportions: mean number of species per family is 13.95, mean number of genera per family – 5.38, mean number of species per genus – 2.59. The ten leading families by number of taxa contain together 757 species (57% of the total number) and 134 genera. Among them, the best represented families are Asteraceae (193, or 25.5%), Poaceae (105, or 13.87%), and Rosaceae (71, or 9.38%). The ten largest genera by number of species (from 51 to 14 species in each), comprise 204 species, or 15.4% of the total species diversity. Of them, the following genera contain the highest number of species: Carex (51 species), Hieracium (25), and Veronica (23). The genera represented by a single species make up more than half of all genera of the flora (277, or 54.21%).

scholarly journals Composition and Distribution of Deep Water Macroalgae Species from the Continental Shelf of Sergipe State, Brazil

Phytotaxa ◽  
2014 ◽  
Vol 190 (1) ◽  
pp. 250 ◽  
Author(s):  
Sonia Maria Barreto Pereira ◽  
JULIANA TORRES ◽  
Lisia Monica de Souza Gestinari
Keyword(s):  
Continental Shelf ◽  
Deep Water ◽  
Number Of Species ◽  
Total Species ◽  
New Occurrences ◽  
Benthic Macroalgae

This study investigates the deep-water flora of the continental shelf in Sergipe State, Brazil located between 10º36’08’’ – 11º21’07’’S and 36º28’10’’ – 37º13’47’’W. The samples were collected by dragging at 18 sampling sites, between 10 to 30 m depth, from May 1999 to March 2000. A total of 91 taxa of marine benthic macroalgae were identified (56 Rhodophyta, 20 Heterokontophyta and 15 Chlorophyta). Forty-seven (47) of these are new occurrences for Sergipe flora. Rhodophyta dominated, accounting for 61% of the total species collected, with the order Ceramiales having the highest number of species present (39.55%), followed by Heterokontophyta (23%), mostly represented by Dictyotales (65%). Finally, 15 Chlorophyta taxa were found (16%), mainly composed of Bryopsidales (53%).

scholarly journals Old and new challenges in using species diversity for assessing biodiversity

2011 ◽  
Vol 366 (1576) ◽  
pp. 2426-2437 ◽  
Author(s):  
Alessandro Chiarucci ◽  
Giovanni Bacaro ◽  
Samuel M. Scheiner
Keyword(s):  
Species Diversity ◽  
Quantitative Measurement ◽  
Phylogenetic Distance ◽  
Existing Problems ◽  
Species Abundances ◽  
Species Lists ◽  
Assessment And Monitoring ◽  
New Challenges ◽  
Patterns And Processes ◽  
Conservation And Management

Although the maintenance of diversity of living systems is critical for ecosystem functioning, the accelerating pace of global change is threatening its preservation. Standardized methods for biodiversity assessment and monitoring are needed. Species diversity is one of the most widely adopted metrics for assessing patterns and processes of biodiversity, at both ecological and biogeographic scales. However, those perspectives differ because of the types of data that can be feasibly collected, resulting in differences in the questions that can be addressed. Despite a theoretical consensus on diversity metrics, standardized methods for its measurement are lacking, especially at the scales needed to monitor biodiversity for conservation and management purposes. We review the conceptual framework for species diversity, examine common metrics, and explore their use for biodiversity conservation and management. Key differences in diversity measures at ecological and biogeographic scales are the completeness of species lists and the ability to include information on species abundances. We analyse the major pitfalls and problems with quantitative measurement of species diversity, look at the use of weighting measures by phylogenetic distance, discuss potential solutions and propose a research agenda to solve the major existing problems.

scholarly journals Status of Isoetes coromandeliana L.f. and Equisetum debile Roxb. ex Voucher in Gujarat State, Western India

2015 ◽  
Vol 7 (4) ◽  
pp. 441-443
Author(s):  
Suresh K. PATEL ◽  
Ronak N. KACHHIYAPATEL ◽  
Anirudh P. SINGH ◽  
Kishore S. Rajput
Keyword(s):  
Field Work ◽  
Western India ◽  
Anthropogenic Pressure ◽  
Legal Action ◽  
Work Study ◽  
Current Field ◽  
Gujarat State ◽  
New Location ◽  
Conservation And Management ◽  
Near Threatened

Occurrence of Isoetes coromandeliana L.f. in natural ponds of Harni, Savali and Tuwa (India) is known since 1956 by earlier workers. Equisetum debile Roxb. ex Voucher was also reported in 1962 growing as wild at Savali. Available literature indicates that I. coromandeliana falls under the category of ‘near threatened’ in Asian continents and as an ‘endangered species’ at national (India) level. In the current field work study, the authors could not locate the investigated species from the locations earlier documented by researchers. Few saplings of I. coromandeliana were observed at Talod and Vaktapur near Gandhinagar, a new location for the species. In contrast, E. debile appeared to be lost in wild from Gujarat. Their extinction from earlier reported locations is associated with anthropogenic pressure and thus legal action for their protection is needed. The present paper suggests further survey and habitat based studies and recommends conservation and management action plans based upon the ecology of the habitat.

scholarly journals Fish species diversity in headwaters streams of Paraguay and Paraná Basins

2007 ◽  
Vol 50 (6) ◽  
pp. 1033-1042 ◽  
Author(s):  
Yzel Rondon Súarez ◽  
Sabrina Bigatão Valério ◽  
Karina Keyla Tondado ◽  
Alexandro Cezar Florentino ◽  
Thiago Rota Alves Felipe ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Environmental Factors ◽  
Fish Species ◽  
Total Species Richness ◽  
Paraná Basin ◽  
Parana Basin ◽  
Number Of Individuals ◽  
Total Species ◽  
Fish Species Diversity

The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.

Tree density, basal area and species diversity in a disturbed dry tropical forest of northern India: implications for conservation

2006 ◽  
Vol 33 (3) ◽  
pp. 256-262 ◽  
Author(s):  
R. SAGAR ◽  
J.S. SINGH
Keyword(s):  
Species Diversity ◽  
Tropical Forest ◽  
Basal Area ◽  
Tree Density ◽  
Dry Forest ◽  
Conservation Strategies ◽  
Stem Density ◽  
Dry Tropical Forest ◽  
Number Of Species ◽  
Northern India

Dry tropical forest communities are among the world's most threatened systems and urgent measures are required to protect and restore them in degraded landscapes. For planning conservation strategies, there is a need to determine the few essential measurable properties, such as number of species and basal area, that best describe the dry forest vegetation and its environment, and to document quantitative relationships among them. This paper examines the relationships between forest basal area and diversity components (number of species and evenness) for a disturbed dry tropical forest of northern India. Data were collected from five sites located in the Vindhyan dry tropical forest of India, selected on the basis of satellite images and field observations to represent the entire range of conditions in terms of canopy cover and disturbance regimes. These sites represented different communities in terms of species composition. The forest was poorer in species richness, and lower in stem density and basal area than wet forests of the tropics. Across sites (communities), the diversity components and tree density were positively related with total tree basal area. Considering basal area as a surrogate of biomass and net production, diversity is found to be positively associated with productivity. A positive relationship between basal area, tree density and species diversity may be an important characteristic of the dry forest, where recurring disturbance does not permit concentration of biomass or stems in only a few strong competitors. However, the relationships of basal area with density, alpha diversity and evenness remain statistically significant only when data from all sites, including the extremely disturbed one, are used in the analysis. In some sites there was a greater coefficient of variation (CV) of basal area than in others, attributed to patchy distribution of stems and resultant blanks. Therefore, to enhance the tree diversity of these forests, the variability in tree basal area must be reduced by regulating local disturbances. Conservation activities, particularly fuelwood plantations near human settlements, deferred grazing and canopy enrichment through multi-species plantations of nursery-raised or wild-collected seedlings of desirable species within the forest patches of low basal area, will be needed to attain restoration goals, but reforestation programmes will have to be made attractive to the forest-dwelling communities.

Chalcidoidea of Iran (Insecta: Hymenoptera)

2021 ◽  
Keyword(s):  
Biological Control ◽  
Species Diversity ◽  
Phylogenetic Relationships ◽  
Parasitoid Species ◽  
Number Of Species ◽  
The Family ◽  
Differential Characters ◽  
Biological Attributes

Abstract Within Hymenoptera, the superfamily Chalcidoidea (chalcidoid wasps) is the second largest superfamily after Ichneumonoidea. Because of the preponderance of parasitoid species, Chalcidoidea is one of the most important groups in applied biological control. This book provides a comprehensive, accurate checklists for the chalcidoid fauna of Iran. The species listed in each family chapter include all the species recorded in the literature from Iran through 2019, with one exception as noted in Chapter 10 (Eurytomidae). Each family chapter includes differential characters to distinguish the family, hypothesized phylogenetic relationships with other families, and general biological attributes of the family. Previous cataloguing efforts of the Iranian fauna for the family are summarized, as well as the information included in the checklist of species for the family. This summary information includes the number of species recorded from Iran, any newly recorded species, a comparison of the Iranian fauna with those of adjacent countries, and major host attributes of the family in Iran. Also included for each species record are host records and plant associates in Iran, when known, and additional comments as necessary. The final chapter tabulates the species diversity of Iranian Chalcidoidea by family, the species newly exclude from Iran, the species presently considered as endemic to Iran and the number of species of each family that are known from each of the 31 provinces that comprise Iran. Because of the importance of chalcidoids for biological control of pests in Iran, host information for parasitoid species that is provided throughout the chapters is synthesized in an Appendix at the end of the book.

Diversity of Iranian Chalcidoidea.

2021 ◽  
pp. 399-410
Author(s):  
Hassan Ghahari ◽  
Gary A. P. Gibson ◽  
Gennaro Viggiani
Keyword(s):  
Saudi Arabia ◽  
Species Diversity ◽  
United Arab Emirates ◽  
Economic Issues ◽  
Number Of Species ◽  
Pest Insects ◽  
Former Ussr

Abstract This chapter tabulates the species diversity of Iranian Chalcidoidea by family, the species newly exclude from Iran, the species presently considered as endemic to Iran and the number of species of each family that are known from each of the 31 provinces that comprise Iran. It also tabulates the fauna of Iran compared with those of 15 adjacent countries having land and sea borders with Iran: Afghanistan, Armenia, Azerbaijan, Bahrain, Iraq, Kazakhstan, Kuwait, Oman, Pakistan, Qatar, Russia, Saudi Arabia, Turkey, Turkmenistan and United Arab Emirates, as well as the former USSR. Finally, comments are provided concerning the importance of accurate taxonomy and species checklists to help resolve economic issues resulting from agricultural and forestry pest insects.

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