scholarly journals Invasive Ants Affect Spatial Distribution Pattern and Diversity of Arboreal Ant Communities in Fruit Plantations, in Tarakan Island, Borneo

Sociobiology ◽  
2019 ◽  
Vol 66 (4) ◽  
pp. 527
Author(s):  
Abdul Rahim ◽  
Kyohsuke Ohkawara
Keyword(s):  
Invasive Species ◽  
Spatial Distribution ◽  
Species Diversity ◽  
Native Species ◽  
Diversity Index ◽  
Habitat Characteristics ◽  
Ant Communities ◽  
Arboreal Ants ◽  
Durio Zibethinus ◽  
Fruit Plantations

Human activities influence ant community structure. In tropical areas, the habitat characteristics of crop plantations frequently shape the structure of arboreal ant communities. The present study investigated the spatial distribution of arboreal ants dwelling in durian Durio zibethinus and citrus Citrus amblycarpa plantations in the Tarakan Island, North Kalimantan. Specifically, it was investigated whether ant communities are dominated by native or invasive species; and if ant arboreal mosaics occur. This study included two sites (A and C) comprising durian and citrus plantations and one site B with only citrus plantations. Ant workers dwelling on crop trees were collected by branch beating, and subsequently identified and counted. Across all sites, a total of 64,360 workers, from 22 ant species, were collected from 59 durian and 63 citrus trees. In site A, the invasive species Tapinoma melanocephalum and the native species Oecophylla smaragdina were numerically dominant. A null model analysis of species co-occurrence revealed that species segregation existed in this site. Conversely, in sites B and C the invasive species T. melanocephalum and Technomyrmex albipes were dominant, and native arboreal ants almost co-occurred with the two species. Moreover, the number of T. melanocephalum and T. albipes workers was negatively correlated with the species diversity index of arboreal ants. However, the number of O. smaragdina workers showed no significant correlation. The results suggest that the invasion and domination of non-native species dissasemble spatial structures and reduce the species diversity in arboreal ant communities. The community structures of arboreal ants in fruit plantations were varied, depending on the fruit species and the properties of dominant ants.

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 Keanekaragaman Pari Hasil Tangkapan Nelayan di TPI Karangantu Banten

2021 ◽  
Vol 9 (3) ◽  
pp. 257-266
Author(s):  
Erreull Isyhadu Putri ◽  
◽  
Dinda Rizqi ◽  
Fenia Alya ◽  
Tia Azizah
Keyword(s):  
Species Diversity ◽  
Literature Review ◽  
Diversity Index ◽  
Conservation Status ◽  
Habitat Characteristics ◽  
Species Diversity Index ◽  
Interview Method

This study aims to determine the diversity of rays caught by fishermen in TPI Karangantu Banten. This research uses interview method and literature review. The discussion of the observations includes classification, habitat, characteristics, and conservation status. The results of this study indicate that there is a diversity of rays, namely the results of the families obtained from the observations are Rhinopteridae, Dasyatidae, and Gymnuridae). From the results of the calculation of the species diversity index using the Shannon Wiener formula, it is included in the medium category. This diversity can be used as knowledge and inventory for biodiversity, especially the chondrichthyes class in TPI Karangantu, Serang, Banten.

scholarly journals KEANEKARAGAMAN JENIS SEMUT (Formicidae) ARBOREAL DI HUTAN MANGROVE KELURAHAN SETAPUK BESAR KOTA SINGKAWANG

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
. Mazlan ◽  
Siti Masitoh Kartikawati ◽  
. Burhanuddin
Keyword(s):  
Species Diversity ◽  
Mangrove Forest ◽  
Diversity Index ◽  
Survey Method ◽  
Ecosystem Stability ◽  
Tidal Level ◽  
Arboreal Ants ◽  
Nypa Fruticans ◽  
A Chain ◽  
Gathering Data

Arboreal ants are ants that do activities and spend their lives in tree. Roles of this organism are to serve as decomposers, pollinators, predators and indicators. Ant species diversity constitutes a chain for ecosystem stability. They are responsible as decomposing insects making their presence becomes ecologically vital. Research on ant species diversity in mangrove forest remains insufficient. One of the reasons possibly is that fact that mangrove is an ecosystem which is affected by sea tide. This research aims at gathering data about ant species diversity based on types of mangrove forest vegetation located in Setapuk Besar, Singkawang City. The research used a survey method by observing types of trees whose diameter was 10 cm and above. Additionally, the tree should have a large number of ants. The data was collected through fly sheet trap set under, in the mid, and above the tidal level. Findings revealed 6 types of ants consisting 4 sub-families in 6 types of the trees i.e. Rhizopora mucronata, Avicennia lanata, Hibiscus tiliaceus, Terminalia capatta, Nypa fruticans, and Bruguiera cylindrical.. Based on the diversity index of those 6 types of trees, the divercity of arboreal ants spesies could be categorized low (H’<1). The highest diversity was nypa fruticans vegetation by 0.325. This was because the tree contains sugar level and carbohydrate. The lowest diversity was Hibiscus tiliaceus and Termialia catappa. The H’ value was 0. One of the reasons was because only one species of ants can be found in both trees, namely Oecophylla smaragdina.Keywords: Arboreal Ants, Diversity, Mangrove, Singkawang

scholarly journals Species diversity and spatial distribution of CL/VL vectors: evidence for variation in gene expression of immunogenic SP15 and LeIF proteins due to bioclimatic characteristics and physiological status of sand flies, Iran

2020 ◽  
Author(s):  
Ali Bordbar ◽  
Parviz Parvizi
Keyword(s):  
Gene Expression ◽  
Spatial Distribution ◽  
Species Diversity ◽  
Interpolation Method ◽  
Diversity Index ◽  
Considerable Effect ◽  
Control Measures ◽  
Physiological Status ◽  
Sand Flies ◽  
Risk Maps

Abstract Background Main approaches of this investigation were climate regionalization to recognize the spatial distribution of cutaneous/visceral leishmaniasis (CL/VL) vectors as risk-maps using ArcGIS modeling system, evaluation of species biodiversity, assessing bio-climate (BC) effect on expression plasticity of genes possessing vaccine properties isolated from wild-collected sand flies.Methods The Inverse Distance Weighting (IDW) interpolation method was used to obtain accurate geography map using ArcGIS10.3.1 in closely-related distances. Species diversity was calculated based on Shannon diversity index using Rv.3.5.3. Expression fold change of SP15 and LeIF genes was evaluated using cDNA synthesis and RT-qPCR analysis. Results Three BC zone were identified in northeast of Iran. Phlebotomus papatasi were abundantly captured in all BC regions and the frequency was more in plains areas of mountainous BC as hot spots of CL. VL vectors were more prevalent in spatial cluster of Mediterranean BC. Semi-arid BC was identified as a major contributing factor to up-regulate SP15 salivary gene expression ( P =0.0050, P <0.05), and Mediterranean BC had considerable effect on up-regulation of LeIF- Leishmania gene in gravid and semi-gravid P. papatasi population ( P =0.0109, P <0.05). Conclusions The diversity and spatial distribution of CL/VL vectors associated with BC regionalization obtained in our research provide epidemiological risk maps and establish more effectively control measures against leishmaniasis. Oscillations in gene expression indicate that each gene has its own features, which are profoundly affected by bioclimatic characteristics and physiological status of sand flies. It is essential to consider BC factors affecting regulatory regions of environmentally responsive loci for genes used in vaccine designing.

scholarly journals The Native Ant Lasius niger Can Limit the Access to Resources of the Invasive Argentine Ant

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2451
Author(s):  
Marion Cordonnier ◽  
Olivier Blight ◽  
Elena Angulo ◽  
Franck Courchamp
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Dominant Species ◽  
Biotic Resistance ◽  
Interference Competition ◽  
Argentine Ant ◽  
Lasius Niger ◽  
Resource Exploitation ◽  
Ant Communities ◽  
Lasius Neglectus

Within ant communities, the biotic resistance of native species against invasive ones is expected to be rare, because invasive species are often highly dominant competitors. The invasive Argentine ant (Linepithema humile (Mayr)) often demonstrated numerical dominance against its opponents, increased aggressiveness, and ability to quickly recruit to food. The present study aimed to assess the behavioral mechanisms involved in the interspecific competition between L. humile, facing either an invasive species (Lasius neglectus Van Loon, Boomsma and Andrásfalvy) or a native dominant species (Lasius niger (Linnaeus)). The resource exploitation by the Argentine ant was investigated during one-hour competitive interactions using 10 dead Drosophila flies as prey. When facing La. niger, L. humile exploratory behavior was strongly inhibited, it brought very few prey resources, and killed few opponents. Conversely, La. neglectus had a low impact on L. humile. Contrarily to expectations, the invasive La. neglectus lacked the ability to hinder L. humile resource exploitation, whereas the native La. niger did. These results suggest that La. niger could impact invasive populations of L. humile by interference competition, perhaps better so than some invasive species. While L. humile has become invasive in Southern Europe, the invasion process could be slowed down in the northern latitudes by such native dominant species.

scholarly journals Bioakumulasi Logam Nikel dan Pola Ordinasi Pada Gastropoda di Kawasan Mangrove Sekitar Areal Bekas Lahan Pertambangan Kabupaten Konawe Utara Sulawesi Tenggara

2020 ◽  
Vol 7 (1) ◽  
pp. 1078
Author(s):  
Jumardin Sinapoy ◽  
Jamili Jamili ◽  
Analuddin Analuddin
Keyword(s):  
Spatial Distribution ◽  
Diversity Index ◽  
Nickel Content ◽  
Habitat Characteristics ◽  
Frequency Diversity ◽  
Dispersal Pattern ◽  
Nickel Metal ◽  
Species Cluster ◽  
Cerithidea Cingulata ◽  
Cluster 2

This study aims to determine the bioaccumulation of nickel metal and the spatial distribution pattern of gastropods in the area of the former nickel mining area in Tokowuta Village, Lasolo District, North Konawe Regency, Southeast Sulawesi. The method used is a combination of the path method and sample plot. The parameters observed in this study include nickel bioaccumulation in gastropods, density, frequency, diversity index, uniformity index, dominance index, dispersal pattern, and PCA ordinance pattern. The results showed that there were seven species in this region where the highest nickel bioaccumulation was found in the type of Nerita lineata (0.068 ppm) and the lowest in Terebralia sulcata (0.017 ppm). The highest density and frequency were found in Terebralia sulcata (54.66% and 25.53%) and the lowest in Telescopium telescopium (1.93% and 4.26%). In this region has a low diversity index (1.36), a uniformity index that is an unstable community (0.70), a low index of dominance (0.35), cluster pattern distribution (1.19). The results of the PCA ordinance pattern study showed the spatial distribution of gastropod dissimilarity factors in each observation plot formed three clusters. Cluster 1 consists of plots 2 and 6. Cluster 2 consists of plots 3, 5, and 10. Cluster 3 consists of plots 1, 4, 7, 8, 9, 11, and 12. The spatial distribution of gastropod habitat factors in each observation plot forms three clusters with different characteristics. Cluster 1 is characterized by soil nickel content. Cluster 2 by salinity. Cluster 3 with pH and water temperature. The spatial distribution of gastropod types based on habitat characteristics can form four clusters. Cluster 1 consists of Littorariascabra. Cluster 2 consists of Terebraliasulcata species. Cluster 3 with Telescopium telescopium and Littoraria melanostoma species. Cluster 4 with Cerithidea cingulata, Cerithidea quadrata, and Nerita lineata species. Keywords: Nickel Metal, Gastropoda, Ordination PatternABSTRAKPenelitian ini bertujuan untuk mengetahui mengetahui bioakumulasi logam nikel dan pola distribusi spasial gastropoda di kawasanareal bekas lahan tambang nikel di Desa Tokowuta Kecamatan Lasolo Kabupaten Konawe Utara Sulawesi Tenggara. Metode yang digunakan adalah kombinasi antara metode jalur dan petak contoh. Parameter yang diamati pada penelitian ini meliputi bioakumulasi nikel pada gastropoda, kepadatan, frekuensi, indeks keanekaragaman, indeks keseragaman, indeks dominansi, pola penyebaran dan pola ordinansi PCA. Hasil penelitian menunjukkan terdapat tujuh spesies pada kawasan ini dimana bioakumulasi nikel tertinggi terdapat pada jenis Nerita lineata (0,068 ppm) dan terendah padaTerebralia sulcata (0,017 ppm). Kepadatan dan frekuensi tertinggi  terdapat pada jenis Terebralia sulcata (54,66% dan 25,53%) dan terendah padaTelescopium telescopium (1,93% dan 4,26%).Pada Kawasan ini memiliki indeks keanekaragaman yang rendah (1,36), indeks keseragaman yang Komunitas Labil(0,70), indeks dominansi yang rendah (0,35), pola penyebaranmengelompok (1,19). Hasil penelitian pola ordinansi PCA menunjukkan sebaran spasial faktor disimilaritas gastropoda pada setiap plot pengamatan membentuk tiga cluster.Cluster 1 terdiri dari plot 2 dan 6. Cluster 2 terdiri dari plot 3, 5 dan 10. Cluster 3 terdiri dari plot 1, 4, 7, 8, 9, 11 dan 12. Sebaran spasial faktor habitat gastropoda pada setiap plot pengamatan membentuk tiga cluster dengan karakteristik yang berbeda. Cluster 1 dicirikan kadar nikel tanah. Cluster 2 oleh salinitas. Cluster 3 dengan pH dan suhu perairan. Sebaran spasial jenis gastropoda berdasarkan karakteristik habitat dapat membentuk empat cluster. Cluster 1 terdiri dari Littoraria scabra. Cluster 2 terdiri dari Terebralia sulcata. Cluster 3 dengan jenis Telescopium telescopium dan Littoraria melanostoma. Cluster 4 dengan jenis Cerithidea cingulata,  Cerithidea quadrata dan Nerita lineata

scholarly journals Effects of invasion level of Prosopis juliflora on native species diversity and regeneration in Afar region, Northeast Ethiopia

2021 ◽  
Author(s):  
Wakshum Shiferaw
Keyword(s):  
Species Diversity ◽  
Native Species ◽  
Diversity Index ◽  
Woody Species ◽  
Prosopis Juliflora ◽  
Shannon Diversity Index ◽  
Shannon Diversity ◽  
Afar Region ◽  
Native Woody Species ◽  
Grazing Lands

AbstractThe study aimed to assess (i) the effects of Prosopis juliflora invasion on the diversity of plant species, and floristic composition at Awash Fentale and the Amibara districts of the Afar region and (ii) the effects of P. juliflora invasion on the regeneration potential of native woody species. Sample collection was performed in habitats of P. juliflora thicket, P. juliflora mixed with native species stands, non-invaded woodlands, and open grazing lands. A stratified random sampling technique was used for data collection. Among species of plants, the highest proportion of species, 87 (27.4%), was recorded under non-invaded woodlands, but the lowest proportion of species, 70 (22%), was recorded under open grazing lands. The invasion level of P. juliflora caused significantly reduced Shannon diversity index. The mean values of Shannon diversity index and species richness under P. juliflora mixed with native species (H’=2.22, R=14) and non-invaded woodlands (H’=2.23, R=13) were significantly higher than P. juliflora thicket (H’=1.96, R=12) and open grazing lands (H’=1.84, R=10). In this study, 102 trees ha-1native woody species were recorded under P. juliflora thicket, but 1252 trees ha-1native species were recorded under non-invaded woodlands. If the present effects of the invasion of P. juliflora on native species diversity were to continue coupled with a drier climate, plant diversity of the Afar flora region will be highly affected. As a result the ecosystem services will be under threat. Thus, the participation of all stakeholders and multidisciplinary research approaches should be designed for the management of invaded rangelands to reverse the situation.

scholarly journals Dynamics of the species diversity and composition of the ruderal vegetation of Slovak and Czech cities

Hacquetia ◽  
2018 ◽  
Vol 17 (2) ◽  
pp. 171-188 ◽  
Author(s):  
Alena Rendeková ◽  
Karol Mičieta ◽  
Zuzana Randáková ◽  
Ján Miškovic
Keyword(s):  
Species Diversity ◽  
Alien Species ◽  
Native Species ◽  
Diversity Index ◽  
Species Evenness ◽  
Ruderal Vegetation ◽  
Fallopia Japonica ◽  
Wiener Diversity Index ◽  
Time Periods ◽  
Invasive Taxa

Abstract This study reports the results of the evaluation of changes in the species diversity and composition of ruderal vegetation of three Slovak and one Czech city over the time. The dataset of 1489 relevés from five ruderal syntaxa from the cities Bratislava, Malacky, Trnava and Brno was used. Data were from two different time periods, the older dataset from the years 1960–1982, the more recent dataset from the years 2005–2016. The statistical analysis revealed the decrease of Shannon–Wiener diversity index of all (native + alien) species in the majority of classes of ruderal vegetation of cities. The analysis of the changes in the Pielou’s measure of species evenness showed that in some of the classes and cities, the species evenness remained unchanged, in the other ones it decreased. The percentage of native species in the ruderal vegetation did not change over the time, but the percentage of invasive alien species in the majority of syntaxa and cities increased significantly. In total, 38 invasive taxa were recorded in the ruderal vegetation of cities. Most of them are neophytes, therophytes and belong to the family Asteraceae. The majority of invasive taxa were recorded in both time periods. Some of the invasive species, e.g. Fallopia japonica and Juncus tenuis were recorded only in the more recent time period. Our results contribute to the knowledge about biological invasions in the cities.

scholarly journals Struktur Komunitas Semut (Hymenoptera : Formicidae) di Lahan Pertanian Organik dan Anorganik Desa Batur, Kecamatan Getasan, Kabupaten Semarang

2018 ◽  
Vol 19 (2) ◽  
pp. 170
Author(s):  
Ivan Mahadika Putra ◽  
Mochamad Hadi ◽  
Rully Rahadian
Keyword(s):  
Community Structure ◽  
Species Diversity ◽  
Dominant Species ◽  
Diversity Index ◽  
Abiotic Factors ◽  
Similarity Index ◽  
Terrestrial Ecosystems ◽  
Species Diversity Index ◽  
Ant Communities ◽  
Organic Farm

Ants play an important role in terrestrial ecosystems, including in organic and inorganic farmland, as predators, scavengers, and their interaction with other organism. The objectives of this study were to compare the community structure and the role of the ant in organic and inorganic farmland, and also to determine soil abiotic factors in both farmland. The study was conducted in organic and inorganic chili crop land at Batur village, Getasan, Semarang. The sampling of ants was performed using pitfall traps and bait traps, and then the ants were identified. Data analysis used is an abundance index, diversity index, evenness index, Hutchinson test and similarity index. The results showed that the number of species and the number of individual of ants in organic farm were higher (45 individuals, 8 species) than inorganic farm (35 individuals, 6 species). Diversity index of ant species in both farmlands were categorized moderate with the index value of 1.92 and 1.42. Statistically, there were no significant differences in species diversity of ants in organic and inorganic farmland. There were five dominant species in organic field and three dominant species in inorganic field. Ants that predominate in both farmlands were Iridomyrmexsp, Tetramorium sp, Solenopsisgeminata, Odontoponeradenticulata and Diacammasp. The similarity of ant communities between organic and inorganic farmland showed high value of similarity index (IS) which was 85.7%. Statistically, abiotic factors showed that there were significantly different of some abiotic factors in both farmlands, the content of carbon, phospor, organic matter and c / n ratio. Keywords: community structure of ants, agricultural ecosystems

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