Symbolic seasonal variation newly found in atmospheric ammonia concentration in urban area of Japan

Lichens were recorded on Quercus petraea trunks and twigs near ammonia recording stations in ‘continental’ Norfolk, and ‘oceanic’ Devon in order to test indicator values developed for epiphytic lichens in areas of high atmospheric ammonia in the Netherlands. Lichens on trunks in Norfolk showed a similar correlation of nitrophyte indices with ammonia concentration and bark pH as those in Holland, whereas in Devon there was no correlation with nitrophyte indices on trunks and a negative correlation with acidophyte indices. Results on twigs in both sites suggest that lichens on twigs respond more rapidly to recent changes in ammonia concentrations while trunks may maintain relict lichen communities due to either a legacy of previous acidification or ecological continuity. The results suggest that loss of acidophytes is taking place prior to the establishment of nitrophytes indicating the importance of establishing levels of ammonia at which sensitive communities are at risk.

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Bat Fauna (Chiroptera) in an urban environment in the Atlantic Forest, northeastern Brazil

Neotropical Biology and Conservation ◽

10.3897/neotropical.14.e34837 ◽

2019 ◽

Vol 14 (1) ◽

pp. 55-82

Author(s):

Edson Silva Barbosa Leal ◽

Deoclécio de Queiróz Guerra Filho ◽

Daniel de Figueiredo Ramalho ◽

Julianne Moura da Silva ◽

Rafael Sales Bandeira ◽

...

Keyword(s):

Seasonal Variation ◽

Urban Environment ◽

Urban Area ◽

Atlantic Forest ◽

Urban Areas ◽

Northeastern Brazil ◽

Ecological Interactions ◽

Significant Difference

In Brazil, only few works have been conducted regarding urban bats and information about richness, composition and ecological interactions in urban areas is little known. Additional studies are important to understand the dynamic of urban bats and offer strategies for their protection. In this paper, we present the results of a bat inventory at the Dois Irmãos campus of UFRPE, Recife, Pernambuco, northeastern Brazil, with analyzes of the composition, richness, diversity, and seasonal variation. From May 2006 to April 2007, we captured 950 bats from 16 species (five families). Frugivores bats accounted for 84.42% of the captures, followed by insectivores, piscivorous, nectarivores, omnivores, and hematophages. The species Artibeus planirostris was the most abundant. There was no significant difference (t = 0.35443, p = 0.7257) on abundance between the seasons of the year. We observed a richer and more diverse bat fauna as one would expect in an urban area, which suggests that the campus is being used for foraging, commuting, or as shelters for these animals.

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Seasonal Variation in the Population of Indian Black Ibis Pseudibis papillosa, Inhabiting the Arid Zone of Rajasthan, India

Our Nature ◽

10.3126/on.v7i1.2571 ◽

1970 ◽

Vol 7 (1) ◽

pp. 193-202

Author(s):

K.C. Soni ◽

A.N. Sharma ◽

V.C. Soni

Keyword(s):

Seasonal Variation ◽

Urban Area ◽

Rural Areas ◽

Urban Areas ◽

Arid Zone ◽

Winter Season ◽

Rural And Urban Areas ◽

Rural And Urban ◽

Juvenile Population ◽

Rural And Urban Area

The population of Black ibis (Pseudibis papillosa) inhabiting rural and urban area of Churu city, Rajasthan was seasonally determined by the direct count method. The counting of the Black ibis was made at roosting sites of Churu city (28°15′N and 74°55′E, 286 msl) and it’s out skirts area of 400 km2. Total 35 roosting sites were identified in the study area of which 19 were located in the urban area and 16 in the rural areas. It was found that number was relatively higher from June to August in 2003, 2004 and 2005. However, the number was highest from June 2004 to August 2004 and lowest from June 2006 to August 2006. The maximum number of adult was noticed in the rainy months of every year. A sharp decline in the juvenile population was observed from January 2004 to April 2004. Maximum 17 juvenile birds were observed in the months of May and June 2004 and October 2005 while the minimum 4 juveniles were observed in January 2005. An average 40.08±3.62 and 35.33±4.61 in 2003, 42.5±4.81 and 43.16±8.69 in 2004, 42.16±4.23 and 38.33±4.47 in 2005 and 36.25±3.81 and 34.91±4.52 in 2006 ibises were recorded in rural and urban areas, respectively. The maximum number of ibis i.e. 101 individuals, occurred in the month of June, 2004. But in general, the population remained more or less constant with seasonal variations involving dispersion during the monsoons and aggregation during the winters. The winter season adversely affects the population of Black ibis in the study area because of the non availability of preferential food, particularly insects.Key words: Seasonal variation, population, Black ibis, arid zone, Rajasthan, IndiaDOI: 10.3126/on.v7i1.2571Our Nature (2009) 7:193-202

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