scholarly journals Keanekaragaman Jenis Semut pada Tingkat Perkembangan Lahan yang Berbeda: Pendekatan Fase Agroforestri

2019 ◽  
Vol 13 (2) ◽  
pp. 160
Author(s):  
Ananto Triyogo ◽  
Budiadi Budiadi ◽  
SM Widyastuti ◽  
Suwito Setyo Budi ◽  
Selly Varanita
Keyword(s):  
Community Structure ◽  
Functional Groups ◽  
Vegetation Structure ◽  
Development Process ◽  
Species Abundance ◽  
Land Development ◽  
Development Phase ◽  
Developmental Phase ◽  
Collection Method ◽  
Agroforestry Practice

Tingkat perkembangan lahan umumnya diikuti dengan perubahan struktur vegetasi penyusun ekosistem yang ada didalamnya. Dalam perjalanannya, muncul intervensi yang dapat mempengaruhi tingkat perkembangan lahan baik mendukung ataupun menghambat. Salah satu bentuk intervensi yang dapat terjadi adalah berupa aktivitas pemanfaatan lahan, sistem agroforestri (AF). Pergeseran tingkat perkembangan lahan melalui pendekatan tingkat perkembangan AF diikuti perubahan vegetasi penyusun menuju kearah ekosistem yang mendekati ekosistem hutan. Dari sisi ekologi, bagaimana perkembangan AF berdampak terhadap struktur komunitas serangga penyusun di dalamnya, khususnya semut, penting diketahui. Penelitian ini dilakukan untuk mengetahui struktur komunitas semut yang menyusun ekosistem AF. Pengambilan data dilakukan di tiga tingkat AF (awal, tengah, dan lanjut) di musim kemarau (April, Mei, Juni, Agustus, dan September). Metode koleksi semut yang digunakan adalah pit-fall trap dan penangkapan langsung. Total diperoleh 7 jenis semut terdiri dari Odontoponera denticulate (Ponerinae), Odontomachus sp. (Ponerinae), Anaplolepis gracilipes (Formicinae), Pheidologeton sp. (Myrmicinae), Camponotus sp. (Formicinae), Polyrachis sp. (Forminae), dan Crematogaster sp. (Myrmicinae). Tingkat perkembangan AF tidak diikuti dengan perbedaan jenis semut namun berdampak pada kemelimpahan masing-masing jenis. Keanekaragaman jenis tertinggi serta jumlah individu semut terbesar berturut-turut ada pada AF tengah, awal, dan lanjut. Selanjutnya, terdapat 5 kelompok fungsional dengan variasi kemelimpahan berdasarkan perkembangan AF. Tingkat AF awal lebih sesuai untuk kelompok Generalized myrmicinae (GM),AF tengah untuk kelompok Dominant opportunist, dan AF lanjut untuk Forest opportunist (FO). The Diversity of Ants in Different Land Develompental: An Agroforestry Phase ApproachAbstractThe levels of land development process typically followed by changes in the vegetation structure of the ecosystems that comprises it. In a process, interventions whether artificial (human) or naturals were able to affect land development, either support or hinder. Some of the interventions that possible to occur are human activities through revegetation and land use, such as agroforestry practice (AF). The levels of land development through the shift of AF development phase common followed by changes in the vegetation inside. In terms of ecology, the mechanism of how the AF development phase affects the community structure is important to know. This research was conducted to determine the community structure of ants under the AF ecosystem and it is functional groups. In addition, we devided the AF system based on its developmental phase (early, middle, and advance). The data was obtained in the area of Nglanggeran, Gunung Kidul Regency of Yogyakarta during the dry season (April, May, June, August, and September). Meanwhile, method of ant collection utilized pit-fall trap and direct collection method. A total 7 species of ants were obtained consisting Odontoponera denticulate (Ponerinae), Odontomachus sp. (Ponerinae), Anaplolepis gracilipes (Formicinae), Pheidologeton sp. (Myrmicinae), Camponotus sp. (Formicinae), Polyrachis sp. (Forminae), and Crematogaster sp. (Myrmicinae). The AF phase are not followed by different species of ants but has an impact on the species abundance. The highest species diversity and the largest number of individual ants were found in middle, early, and advanced AF, respectively. Furthermore, there are 5 ant functional groups with variouss abundance based on AF phase. The early AF is more suitable for Generalized myrmicinae (GM) groups, middle for Dominant opportunist (DO) and GM groups, while advanced for Forest opportunist (FO) groups.

scholarly journals Abundance of ants (Hymenoptera: Formicidae) and the functional groups in two different habitats

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
Ananto Triyogo ◽  
Budiadi ◽  
Siti Muslimah Widyastuti ◽  
Sena Adi Subrata ◽  
Suwito Susetyo Budi
Keyword(s):  
Functional Groups ◽  
Native Species ◽  
Diversity Index ◽  
Species Abundance ◽  
Land Development ◽  
Invasive Ants ◽  
Ant Communities ◽  
Anoplolepis Gracilipes ◽  
Research Education ◽  
June July

Abstract. Triyogo A, Budiadi, Widyastuti SM, Subrata SA, Budi SS. 2020. Abundance of ants (Hymenoptera: Formicidae) and the functional groups in two different habitats. Biodiversitas 21: 2079-2087. Land development often affects the quantity and diversity of ants (Hymenoptera: Formicidae). The aim of this study, therefore, was to determine and compare the ant species abundance and the functional groups between two different habitats, representing land development, including pioneer and agroforestry. This research involved a survey of the ants at the Forest Research Education (FRE) of Wanagama I Yogyakarta, and data were accumulated over a period of five months (April, May, June, July, and August). In addition, pit-fall trap and direct collection methods were used, involving the placement of 54 pit-fall traps at two habitats, and the ant specimens were retrieved after a two day period. The results show the total individual abundance of 2,310 and 2,067, on agroforestry and pioneer, respectively. Furthermore, the species richness and diversity index was higher in agroforestry (7; 2.01), compared with pioneer (6; 1.49), where the three dominant species include, Anoplolepis gracilipes, Solenopsis sp., Odontoponera denticulata; and Anoplolepis gracilipes, Odontoponera denticulata, Camponotus sp., respectively. Conversely, the highest amount of invasive ants (Solenopsis sp.) was observed in agroforestry, which negatively impacted on the presence of native species (Odontoponera denticulata). In addition, PCA analysis showed the development of three ant groups on each habitat, hence agroforestry made more real differences in the aspect of species abundance, and none in terms of richness. Therefore, notable differences were observed in the ant communities between both habitats, and agroforestry was indicated as a disturbed area, based on the increment in tramp and invasive ants, alongside low abundance of native and functional groups.

scholarly journals Effects of habitat edges on vegetation structure and the vulnerable golden-brown mouse lemur (Microcebus ravelobensis) in northwestern Madagascar

BMC Ecology ◽  
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Bertrand Andriatsitohaina ◽  
Daniel Romero-Mujalli ◽  
Malcolm S. Ramsay ◽  
Frederik Kiene ◽  
Solofonirina Rasoloharijaona ◽  
...  
Keyword(s):  
Body Mass ◽  
Edge Effects ◽  
Vegetation Structure ◽  
Species Abundance ◽  
Tree Height ◽  
Logistic Function ◽  
Study Region ◽  
Large Trees ◽  
Significant Difference ◽  
Vegetation Parameters

Abstract Background Edge effects can influence species composition and community structure as a result of changes in microenvironment and edaphic variables. We investigated effects of habitat edges on vegetation structure, abundance and body mass of one vulnerable Microcebus species in northwestern Madagascar. We trapped mouse lemurs along four 1000-m transects (total of 2424 trap nights) that ran perpendicular to the forest edge. We installed 16 pairs of 20 m2 vegetation plots along each transect and measured nine vegetation parameters. To determine the responses of the vegetation and animals to an increasing distance to the edge, we tested the fit of four alternative mathematical functions (linear, power, logistic and unimodal) to the data and derived the depth of edge influence (DEI) for all parameters. Results Logistic and unimodal functions best explained edge responses of vegetation parameters, and the logistic function performed best for abundance and body mass of M. ravelobensis. The DEI varied between 50 m (no. of seedlings, no. of liana, dbh of large trees [dbh ≥ 10 cm]) and 460 m (tree height of large trees) for the vegetation parameters, whereas it was 340 m for M. ravelobensis abundance and 390 m for body mass, corresponding best to the DEI of small tree [dbh < 10 cm] density (360 m). Small trees were significantly taller and the density of seedlings was higher in the interior than in the edge habitat. However, there was no significant difference in M. ravelobensis abundance and body mass between interior and edge habitats, suggesting that M. ravelobensis did not show a strong edge response in the study region. Finally, regression analyses revealed three negative (species abundance and three vegetation parameters) and two positive relationships (body mass and two vegetation parameters), suggesting an impact of vegetation structure on M. ravelobensis which may be partly independent of edge effects. Conclusions A comparison of our results with previous findings reveals that edge effects are variable in space in a small nocturnal primate from Madagascar. Such an ecological plasticity could be extremely relevant for mitigating species responses to habitat loss and anthropogenic disturbances.

The Development of Balance Retraining: An Online Intervention for Dizziness in Adults Aged 50 Years and Older

2015 ◽  
Vol 24 (3) ◽  
pp. 276-279 ◽  
Author(s):  
Rosie Essery ◽  
Sarah Kirby ◽  
Adam W. A. Geraghty ◽  
Gerhard Andersson ◽  
Per Carlbring ◽  
...  
Keyword(s):  
Primary Care ◽  
Development Process ◽  
Controlled Trial ◽  
Online Intervention ◽  
Intervention Design ◽  
Development Phase ◽  
Think Aloud ◽  
Valuable Data ◽  
Randomized Controlled ◽  
Phase Data

Purpose This article outlines the rationale and development process for an online intervention based on vestibular rehabilitation therapy (VRT). The intervention aims to assist adults aged 50 years and older to self-manage and reduce dizziness symptoms. Method The intervention was developed according to the person-based approach to digital intervention design focused on accommodating perspectives of target users. A prototype version of the intervention was provided to 18 adults (11 women, 7 men) aged 50 years and older with dizziness. These adults were invited to use the intervention over a 6-week period and, during this time, took part in a think-aloud session. This session sought to understand users' perceptions of how acceptable, engaging, and easy to use they found the online intervention. Results Users were extremely positive regarding how easy to navigate, visually appealing, and informative they found the intervention. Think-aloud sessions provided valuable data for informing small amendments to further enhance acceptability of the intervention for target users. Conclusions Informed by these development-phase data, a finalized version of the intervention is now being investigated in a primary care–based randomized controlled trial. Results should provide an understanding of whether VRT can be effectively—especially, cost-effectively—delivered via an online intervention to adults aged 50 years and older.

scholarly journals The Development of an Interwar Suburb: Kingsway Park, Etobicoke

2013 ◽  
Vol 13 (3) ◽  
pp. 225-235 ◽  
Author(s):  
Ross Paterson
Keyword(s):  
Development Process ◽  
Land Development ◽  
Building Process

An examination of planned suburbanisation is provided in this study through a discussion of the activities of the Home Smith and Company, and in particular, by an examination of the development and building of one of the Company's premier subdivisions, Kingsway Park. The study presents further evidence that the inter-war period encompassed a pivotal period in the evolving city-building process, bridging the transition between the fragmentary system employed in building the Victorian suburbs and the highly integrated land development process in place today.

scholarly journals Community structure of tenebrionid beetles in the Ulan Buh Desert (Inner Mongolia, China) (Coleoptera: Tenebrionidae)

2019 ◽  
Vol 51 (2) ◽  
pp. 193-200 ◽  
Author(s):  
Yiping Niu ◽  
Guodong Ren ◽  
Giulia Lin ◽  
Letizia Di Biase ◽  
Simone Fattorini
Keyword(s):  
Community Structure ◽  
Plant Cover ◽  
Species Abundance ◽  
Local Environment ◽  
Gobi Desert ◽  
Similar Species ◽  
Abundance Patterns ◽  
Central Asian ◽  
Species Abundance Distributions ◽  
Ulan Buh Desert

Tenebrionids are a conspicuous faunal component of Central Asian deserts, but little is known about their community ecology. We investigated how tenebrionid community structure varied along a vegetational gradient in the Ulan Buh Desert (Gobi Desert). Sampling was done with pitfall traps in three sites with different vegetation cover. Species abundance distributions were fitted by the geometric series model, which expresses the “niche pre-emption” hypothesis. Community structure was investigated using different measures of diversity (number of species, Margaleff richness and Shannon-Weaner index), dominance (Simpson and Berger-Parker indexes) and evenness (Pielou’s index). The observed tenebrionid species richness was similar to that known from other Gobi Desert sites. The three investigated sites have similar species-abundance patterns, but the most dominant species varied among them. This suggests that the local environment operates a filtering action on the same basic fauna, allowing different species to dominate under different conditions. Overall, the highest total abundance was observed in the true desert site, however this site had a community structure similar to that observed in the site with more vegetation. By contrast, the investigated site with intermediate conditions showed a higher diversity and evenness, and a lower dominance. Thus, intermediate conditions of plant cover favour tenebrionid diversity, whereas a dense cover or a very sparse cover increases the dominance.

Epibenthic community structure in Port Phillip Bay, Victoria, Australia

2000 ◽  
Vol 51 (7) ◽  
pp. 689 ◽  
Author(s):  
Brian F. Cohen ◽  
David R. Currie ◽  
Matthew A. McArthur
Keyword(s):  
Community Structure ◽  
Species Abundance ◽  
Habitat Type ◽  
Demersal Fish ◽  
Asterias Amurensis ◽  
Styela Plicata ◽  
Strong Trend ◽  
Epifaunal Community ◽  
Inshore Waters ◽  
Total Species

Epibenthic community structure in Port Phillip Bay was examined from quantitative diver samples collected at 30 depth-stratified stations during 1998. Analysis of variance showed a strong trend of decreasing epibenthic abundance, biomass and species diversity with depth. Reductions in these three parameters were most pronounced over shallow inshore waters and could be attributed largely to decreases in the abundance of the heavy, mat-forming ascidian Pyura stolonifera with depth. Four epifaunal community groupings, closely reflecting differences in sediment and habitat type within the bay, were identified from ordinations of species abundance and biomass data. The four epifaunal groupings also closely matched distributional patterns observed in other studies in both demersal fish and infaunal communities. Epifaunal communities in the bay were dominated by filter-feeding organisms which accounted for nearly 95% of the total species abundance and 98% of the total species biomass. Seven of the 63 epibenthic organisms collected during the survey are exotic introductions to the bay (Sabella spallanzanii, Ascidiella aspersa, Styela clava, Styela plicata, Ciona intestinalis, Pyromaia tuberculata and Asterias amurensis). As many of these species are widespread and abundant (35% of all individuals), their effects on the ecology of Port Phillip Bay are likely to be significant.

Sign in / Sign up

Export Citation Format

Share Document