Seasonal Abundance and Diversity of Arthropods onAcacia mangium(Fabales: Fabaceae) Trees as Windbreaks in the Cerrado

We determined patterns of seasonal abundance and diversity of seabirds and coastal waterfowl in Minas Passage, Bay of Fundy, Nova Scotia, Canada using quantitative, shore-based point surveys from mid-March to late August and mid-October to December 2010 to 2012. This area experiences the world’s highest tides and greatest tidal currents. We showed that species and seasonal cycles of waterbirds in Minas Passage reflect patterns typical of the inner Bay of Fundy and the northeast Atlantic coast of North America. The study highlights the importance of Minas Passage as an important local migration pathway for waterbirds including Black Scoter (Melanitta americana) and Red-throated Loon (Gavia stellata) passing through the Bay of Fundy. Large numbers of sea ducks (Black Scoter, Surf Scoter [Melanitta perspicillata], White-winged Scoter (Melanitta fusca), and Long-tailed Duck [Clangula hyemalis]), and Red-throated Loon were observed at the site in spring and fall, corresponding to known peak movements elsewhere in the Bay of Fundy. Fewest species and smallest abundances of waterbirds overall occurred in summer and early winter, while most species and largest abundances occurred in April-May and early November. Of the 46 species observed, resident breeders such as Herring Gull (Larus argentatus), Great Black-backed Gull (Larus marinus), Common Eider (Somateria mollissima), Black Guillemot (Cepphus grylle), and Double-crested Cormorant (Phalacrocorax auritus), were most abundant in spring to early summer during breeding and migrants including Red-throated Loon, Black Scoter, Ring-billed Gull (Larus delawarensis), Surf Scoter, and Northern Gannet (Morus bassanus) occurred in moderate numbers during migration periods.

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Response of soil arthropods population to different farming systems under cotton integrated with groundnut and pigeonpea crops

Legume Research - An International Journal ◽

10.18805/lr-3829 ◽

2018 ◽

Author(s):

R. Chethan ◽

R.K. K. Patil ◽

B. Halappa

Keyword(s):

Organic Farming ◽

Farming Systems ◽

Farming System ◽

Pitfall Trap ◽

Seasonal Abundance ◽

Soil Arthropods ◽

Conventional Farming ◽

Below Ground ◽

Abundance And Diversity ◽

Organic Farming System

A study was carried out to know the response of organic, integrated and conventional farming systems on the diversity of soil meso and macro arthropod populations in the cotton inter cropped with groundnut and pigeonpea at MARS, UAS, Dharwad during kharif -2015-16. The organic farming system has recorded highest meso and macro arthropod population of 21.35 per 100 g of soil and 42.00 per pitfall trap respectively. Cotton intercropped with groundnut has recorded higher population of meso and macro arthropods (15.50 /100 g of soil and 41.26/ pitfall trap, respectively). The seasonal abundance of soil arthropods was high in October (25.89/100g of soil) and least in December (5.78/ 100g of soil) months. The diversity of soil arthropod populations assessed on the Shannon’s index of below ground arthropod populations recorded was highest in organic farming (0.61) and least in conventional farming (0.51) system. Hence, the organic farming system increases abundance and diversity of soil organisms and soil fertility, and it adds large amounts of organic residue inputs, which in turn increases the biological activity in soil.

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Abundance and Diversity of Zooplankton in Semi-Intensive Shrimp (Penaeus monodon) Farm

International Journal of Life Sciences ◽

10.3126/ijls.v5i1.5286 ◽

2012 ◽

Vol 5 (1) ◽

pp. 1-11 ◽

Cited By ~ 1

Author(s):

Alokesh Kumar Ghosh ◽

Suman Kumar Saha ◽

Md Rashedul Islam ◽

SM Bazlur

Keyword(s):

Management Strategies ◽

Penaeus Monodon ◽

Life Sciences ◽

Seasonal Abundance ◽

Zooplankton Abundance ◽

Shrimp Culture ◽

Physico Chemical ◽

Chemical Factors ◽

Abundance And Diversity ◽

Two Peaks

The present study was carried out on the seasonal abundance and diversity of zooplankton in a semi- intensive shrimp farm of Bagerhat district from June to December, 2008. Plankton samples were collected by conical shaped monofilament nylon net (Plankton net) and Lugol’s solution was used for preservation. The zooplankton abundance was influenced by physico-chemical factors. In the present study 5 groups of zooplankton were observed namely rotifer, copepod, cladocera, ostracoda and crustacean larvae. Among the various groups of zooplankton, the percentages of copepod, rotifer, cladocera, ostracoda and crustacean larvae in the culture system were 52%, 39%, 7%, 1% and 1% respectively. The zooplankton was dominated by copepods (52%) which showed more or less two peaks in August (833 individuals/L) and in October (815 individuals/L). Rotifer and copepod were about r awhile one genus Cypris of ostracod was found only in August. Three genus of copepod namely Diaptomus, Cyclops and Mesocyclops were identified in the study area of which Diaptomus and Mesocyclops were more or less dominant while four genus of which Brachionus and Filinia under rotifer and Daphnia and Diaphanosoma under cladocera were also found during the study period. The findings of the present study will help to improve the management strategies of shrimp culture system.DOI: http://dx.doi.org/10.3126/ijls.v5i1.5286 International Journal of Life Sciences Vol.5(1) 2011 1-11

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Seasonal Abundance and Diversity of Spiders in Two Intertidal Marsh Plant Communities

Estuaries ◽

10.2307/1351876 ◽

1985 ◽

Vol 8 (4) ◽

pp. 381 ◽

Cited By ~ 4

Author(s):

Mark W. LaSalle ◽

Armando A. de la Cruz

Keyword(s):

Plant Communities ◽

Seasonal Abundance ◽

Marsh Plant ◽

Abundance And Diversity

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Seasonal abundance and diversity of spiders (Arachnida: Araneae) in rice ecosystem of Himachal Pradesh

ORYZA- An International Journal on Rice ◽

10.35709/ory.2021.58.1.9 ◽

2021 ◽

Vol 58 (1) ◽

pp. 55-59

Author(s):

Chhavi ◽

Pawan K Sharma ◽

Dhruba Chandra Dhali

Keyword(s):

Himachal Pradesh ◽

Population Trend ◽

Seasonal Abundance ◽

Field Surveys ◽

Net Method ◽

Rice Ecosystems ◽

Abundance And Diversity ◽

Rice Ecosystem ◽

Sweep Net ◽

Unknown Male

Spiders are one of the most fascinating and diverse invertebrates and also potential bio-control agents in agro-ecosystems. Field surveys were carried out at Sundernagar, Jogindernagar, Nurpur and Palampur areas of Himachal Pradesh by two methods namely visual count and sweep net to assess seasonal abundance and diversity of spider, in the rice ecosystems during kharif, 2015 and 2016. It was found that the population trend was well represented by visual count method as compared to sweep net method. Maximum numbers of spiders were recorded from Palampur area followed by Sundernagar, Jogindernagar and Nurpur. Eleven families viz., Oxyopidae, Tetragnathidae, Salticidae, Lycosidae, Pisauridae, Araneidae, Theridiidae, Clubionidae, Sparassidae, Thomisidae and Pholcidae were recorded from the fields with majority belonging to Araneidae and Tetragnathidae. The pre-dominant spider genus from all the locations were Tetragnatha and Neoscona while Araneus pseudosturmii and Runcinia ghorpadei Tikader were confined only to Nurpur and Sundernagar, respectively. A. pseudosturmii and Micropholcus fauroti Simon seem to be the first records from India while R. ghorpadei to be the hitherto unknown male morph.

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