Effects of river connectivity on marsh vegetation community structure and species richness in montane floodplain wetlands in Jasper National Park, Alberta, Canada

A study on Echinoderms community structure in marine national parks of Wakatobi, Southeast Sulawesi was conducted in six locations, i.e., Waha Beach, Coastal Sombo, Beach Houses, Beach Kapota, Banakawa beach, and Umala beach in October 2013. All of the six parks were located the Wakatobi territorial waters with coordinates of 5°06'25" S and 123°124'10 E. The results showed of 18 species of echinoderms representing six different types of Asteroidea, two types of Ophiuroidea, six types of Echinoidea, and four types of Holothuroidea. Group of starfish or Asteroidea was the most prominent on seagrass area. Based on the six transects sites, it turned out that the group of starfish (Asteridea) occupied a relatively high level of species richness. From the quantitative analysis values, we obtained diversity index (H) of 1.105 in Sombu, the highest evenness index (J) of 0.989 was found in Umala, and the highest species richness index values (D) of 0.132 was obtained in kapota. It seemed that all echinoderm groups were generally like seagrass microhabitat (12 types). While, sand and dead coral habitats were only occupied by 8 (eight) echinoderm groups. Keywords: echinoderms, diversity, Wakatobi, Southeast Sulawesi

Download Full-text

Helminth Parasite Communities of Two Scorpaena spp. (Scorpaenidae) From Reefs of Veracruz, Mexico

Journal of Agricultural Science ◽

10.5539/jas.v10n9p504 ◽

2018 ◽

Vol 10 (9) ◽

pp. 504

Author(s):

Jesús Montoya-Mendoza ◽

Sandra Edith Badillo-López ◽

Isabel Araceli Amaro-Espejo ◽

María del Refugio Castañeda-Chávez ◽

Fabiola Lango-Reynoso ◽

...

Keyword(s):

Species Richness ◽

Community Structure ◽

National Park ◽

Common Species ◽

Shannon Index ◽

Marine Fishes ◽

Helminth Community ◽

Component Community ◽

Parasite Communities ◽

Southern Gulf Of Mexico

Scorpaena brasiliensis and S. plumieri are relevant fish species in reef systems, but little is known about their parasitic helminth communities and their structure. This paper describes such community in terms of species richness and diversity. A helminthological study was conducted on 33 specimens of S. brasiliensis and 36 S. plumieri, captured in the Pajaros and Cabezo Reefs, in the Veracruz Reef System National Park (VRSNP), Veracruz, Mexico. The helminth community structure was analyzed in both host species. A total of 10 parasitic species was registered in S. brasiliensis (5 digeneans, 1 cestode, 3 nematodes, 1 acanthocephalan), while S. plumieri hosted 11 species (4 digeneans, 1 monogenean, 1 cestode, 4 nematodes, 1 acanthocephalan), with 8 common species. The species with the highest prevalence were Pseudocapillaria (Icthyocapillaria) sp., with 18.2% and 19.4% in S. brasiliensis and S. plumieri, respectively. Component community richness for S. brasiliensis was S = 10, with Shannon index diversity value of H’ = 2.08. For S. plumieri, such values were of S = 11 and H’ = 1.91. Richness and diversity in the component and infracommunity levels for both hosts are lower than in other parasite communities of marine fishes in the southern Gulf of Mexico.

Download Full-text

Community Structure, Biodiversity and Spatiotemporal Distribution of the Black Flies (Diptera: Simuliidae) Using Malaise Traps on the Highest Mountain in Thailand

Insects ◽

10.3390/insects12060504 ◽

2021 ◽

Vol 12 (6) ◽

pp. 504

Author(s):

Wichai Srisuka ◽

Chayanit Sulin ◽

Kittipat Aupalee ◽

Thapanat Phankaen ◽

Kritsana Taai ◽

...

Keyword(s):

Species Richness ◽

Community Structure ◽

National Park ◽

Environmental Changes ◽

Species Group ◽

Seasonal Abundance ◽

Black Flies ◽

Blood Sucking ◽

Doi Inthanon ◽

Malaise Traps

Black flies form a group of small blood-sucking insects of medical and veterinary importance. This study aimed to investigate the community structure, biodiversity and spatial and temporal distribution of adult black flies in tropical rain forests, by using malaise traps in Doi Inthanon National Park, northern Thailand. Malaise traps were placed along six elevational gradients (400 m to 2500 m, above sea level) at Doi Inthanon National Park, Chiang Mai province, from December 2013 to November 2014. A total of 9406 adult female black flies belonging to five subgenera—Daviesellum (2%), Gomphostilbia (23%), Montisimulium (11%), Nevermannia (16%) and Simulium (48%)—were collected. Among 44 taxa found, S. tenebrosum complex had the highest relative abundance (11.1%), followed by the S. asakoae species-group (9.6%), the S. striatum species-group (7.7%), S. inthanonense (6.6%), S. doipuiense complex (6.4%), S. chomthongense complex (5.3%), S. chumpornense (5.1%) and S. nigrogilvum (4.1%). Two human-biting species—S. nigrogilvum and species in the S. asakoae species-group—were found in all of the collection sites with 100% species occurrence. Species richness was highest at mid elevation (1400 m), which is represented by 19 black fly species. The peak and lowest seasonal abundance was observed in the rainy and hot season, respectively. Seasonal species richness was highest in the cold season, except for that from elevation sites at 700 m, 1700 m and 2500 m. This study revealed that the malaise trap is effective in providing important data for further monitoring of the effects of environmental changes and conservation planning on the biodiversity of black flies in Doi Inthanon National Park.

Download Full-text

Savanna fires govern community structure of ungulates in Bénoué National Park, Cameroon

Journal of Tropical Ecology ◽

10.1017/s0266467407004609 ◽

2008 ◽

Vol 24 (1) ◽

pp. 39-47 ◽

Cited By ~ 18

Author(s):

Erik Klop ◽

Janneke van Goethem

Keyword(s):

Species Richness ◽

Community Structure ◽

Body Mass ◽

National Park ◽

Virtual Communities ◽

Spatial Scales ◽

West African ◽

Species Density ◽

Savanna Fires ◽

Occurrence Patterns

Abstract:We studied the effects of savanna fires on the structure of local ungulate communities in a West African woodland savanna. The distribution of 11 ungulate species over 9−15 burned sites (the number of which increased as burning activity continued during the dry season) and 7−13 unburned sites was compared with a variety of null models or randomized ‘virtual communities’. Five different parameters of community structure were examined: body mass distribution, co-occurrence patterns, species richness, species density and guild dominance. Overall, ungulate species were not randomly distributed over burned and unburned sites. The regular spacing of body masses in the set of species recorded on burned and unburned sites indicated competition, since species similar in body mass are more likely to compete than species of different size. However, co-occurrence patterns on burned sites were random, indicating absence of competition at fine spatial scales due to differential habitat use within the burned landscape. Although the attractiveness of the regrowth on burned sites resulted in higher numbers of ungulates compared with unburned sites, species richness was not different. Grazers were the dominant guild on burned sites, but there were no differences in species richness or species density between grazers and browsers on unburned sites.

Download Full-text

Effects of Management on Lichen Species Richness, Ecological Traits and Community Structure in the Rodnei Mountains National Park (Romania)

PLoS ONE ◽

10.1371/journal.pone.0145808 ◽

2015 ◽

Vol 10 (12) ◽

pp. e0145808 ◽

Cited By ~ 15

Author(s):

Ioana Violeta Ardelean ◽

Christine Keller ◽

Christoph Scheidegger

Keyword(s):

Species Richness ◽

Community Structure ◽

National Park ◽

Lichen Species ◽

Ecological Traits

Download Full-text

Insect pollinator's community structure in different habitats of Shivapuri--Nagarjun National Park, Nepal

10.22541/au.163350401.19573487/v1 ◽

2021 ◽

Author(s):

Urmila Dyola ◽

Chitra Baniya ◽

Pushpa Acharya ◽

Pradip Subedi ◽

Anjeela Pandey ◽

...

Keyword(s):

Species Richness ◽

Community Structure ◽

Community Composition ◽

Environmental Variables ◽

National Park ◽

Strong Positive Correlation ◽

Pollinator Species ◽

Lower Elevation ◽

Insect Pollinators ◽

Important Means

Insect pollinators are important means for a stable ecosystem. The habitat types play a crucial role in the community composition, abundance, diversity, and species richness of the pollinators. The present study in Shivapuri–Nagarjun National Park explored the species richness and abundances of insect pollinators in four different habitats and different environmental variables in determining the community composition of the pollinators. Data were collected from 1500 m–2700 m using pan traps and hand sweeping methods. Non–metric multidimensional scaling (NMDS) and redundancy analysis (RDA) were conducted to show the association between insect pollinators and environmental variables. The results firmly demonstrated that species richness and abundances were higher in open trails compared to other habitats. The distribution of the pollinator species was more uniform in the open trail followed by the grassland. Similarly, a strong positive correlation between flower resources and pollinator’s abundance was found. In conclusion, the open trail harbor rich insect pollinators in lower elevation. The community structure of the pollinators was strongly influenced by the presence of flowers in the trails.

Download Full-text

COMMUNITY STRUCTURE ECHINODERMS (ASTEROIDEA, OPHIUROIDEA, ECHINOIDEA AND HOLOTHUROIDEA) IN THE MARINE NATIONAL PARK EAST SULAWESI WAKATOBI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i1.13898 ◽

2016 ◽

Vol 8 (1) ◽

Author(s):

Eddy Yusron

Keyword(s):

Species Richness ◽

Community Structure ◽

National Parks ◽

National Park ◽

Diversity Index ◽

Dead Coral ◽

Evenness Index ◽

Different Types ◽

High Level ◽

Richness Index

A study on Echinoderms community structure in marine national parks of Wakatobi, Southeast Sulawesi was conducted in six locations, i.e., Waha Beach, Coastal Sombo, Beach Houses, Beach Kapota, Banakawa beach, and Umala beach in October 2013. All of the six parks were located the Wakatobi territorial waters with coordinates of 5°06'25" S and 123°124'10 E. The results showed of 18 species of echinoderms representing six different types of Asteroidea, two types of Ophiuroidea, six types of Echinoidea, and four types of Holothuroidea. Group of starfish or Asteroidea was the most prominent on seagrass area. Based on the six transects sites, it turned out that the group of starfish (Asteridea) occupied a relatively high level of species richness. From the quantitative analysis values, we obtained diversity index (H) of 1.105 in Sombu, the highest evenness index (J) of 0.989 was found in Umala, and the highest species richness index values (D) of 0.132 was obtained in kapota. It seemed that all echinoderm groups were generally like seagrass microhabitat (12 types). While, sand and dead coral habitats were only occupied by 8 (eight) echinoderm groups. Keywords: echinoderms, diversity, Wakatobi, Southeast Sulawesi

Download Full-text

Understory vegetation community structure and diversity in low-value lichee (Litchi chinensis Sonn.) plantation in Dongguan of South China

CHINESE JOURNAL OF ECO-AGRICULTURE ◽

10.3724/sp.j.1011.2011.00682 ◽

2011 ◽

Vol 19 (3) ◽

pp. 682-687 ◽

Cited By ~ 1

Author(s):

Jian-Yun ZHU ◽

Dan-Dan XIE ◽

Yong-Chang YE ◽

Zhi-Yao SU

Keyword(s):

Community Structure ◽

South China ◽

Understory Vegetation ◽

Vegetation Community ◽

Litchi Chinensis

Download Full-text

Vegetation Response to Goats Grazing Intensity in Semiarid Hilly Grassland of the Loess Plateau, Lanzhou, China

Sustainability ◽

10.3390/su13063569 ◽

2021 ◽

Vol 13 (6) ◽

pp. 3569

Author(s):

Hua Cheng ◽

Baocheng Jin ◽

Kai Luo ◽

Jiuying Pei ◽

Xueli Zhang ◽

...

Keyword(s):

Growth Rate ◽

Community Structure ◽

Plant Growth ◽

Loess Plateau ◽

Grazing Intensity ◽

Gps Tracking ◽

Growth Stages ◽

The Loess Plateau ◽

Vegetation Community ◽

Natural Grasslands

Quantitatively estimating the grazing intensity (GI) effects on vegetation in semiarid hilly grassland of the Loess Plateau can help to develop safe utilization levels for natural grasslands, which is a necessity of maintaining livestock production and sustainable development of grasslands. Normalized difference vegetation index (NDVI), field vegetation data, and 181 days (one goat per day) of GPS tracking were combined to quantify the spatial pattern of GI, and its effects on the vegetation community structure. The spatial distribution of GI was uneven, with a mean value of 0.50 goats/ha, and 95% of the study area had less than 1.30 goats/ha. The areas with utilization rates of rangeland (July) lower than 45% and 20% made up about 95% and 60% of the study area, respectively. Grazing significantly reduced monthly aboveground biomass, but the grazing effects on plant growth rate were complex across the different plant growth stages. Grazing impaired plant growth in general, but the intermediate GI appeared to facilitate plant growth rate at the end of the growing seasons. Grazing had minimal relationship with vegetation community structure characteristics, though Importance Value of forbs increased with increasing GI. Flexibility in the number of goats and conservatively defining utilization rate, according to the inter-annual variation of utilization biomass, would be beneficial to achieve ecologically healthy and economically sustainable GI.

Download Full-text