Rapid assessment of epiphytic pteridophyte biodiversity in Mt. Apo Natural Park, North Cotabato Province, Philippines: a comparison of disturbed and undisturbed forests

2020 ◽  
Vol 14 (3) ◽  
Keyword(s):  
Rapid Assessment ◽  
Abundant Species ◽  
Diversity Indices ◽  
The Philippines ◽  
Importance Value ◽  
Natural Park ◽  
Disturbed Areas ◽  
As Species ◽  
Unique Composition ◽  
Species Importance

Pteridophytes are potential indicators of climate change and environmental disturbances because of their sensitivity to the changes in the environment such as sunlight intensities and humidity levels. The study was conducted to document the species and compare the diversity of epiphytic pteridophytes in two sites–the undisturbed and disturbed areas of Mt. Apo Natural Park, North Cotabato Province in the Philippines. In each site, four stations were established, each with four 20 m × 20 m plots that are at least 20 m apart from each other. Between stations, at least 100 m was maintained. In this study, 102 species of epiphytic pteridophytes belonging to 33 genera and 14 families were identified. Seven species are lycophytes and 95 species are ferns. The number of species recorded represents 10 % of all species of pteridophytes in the Philippines. Polypodiaceae was the most dominant family consisting of 13 genera and 33 species. Among these, Prosaptia was the largest genus represented by nine species followed by Selliguea with five species. Based on the Species Importance Value (SIV), Lindsaea pulchella was the most abundant species in the area studied. Abundance of epiphytic pteridophytes vary between two sites but other parameters such as species richness, evenness, Shannon-Weiner and Simpson diversity indices showed no significant differences. There were three main assemblages of epiphytic pteridophytes based on species composition with 50% overall similarity. Of the 102 species identified, 11 were threatened which represent 6.08% of the total threatened pteridophytes of the Philippines. Noteworthy is the new species record of Asplenium beccarianum for the Philippines. Unique composition of epiphytic pteridophytes was evident and the results showed that Mt. Apo is an important location for the conservation of these communities. KEYWORDS: abundance, Asplenium beccarianum, conservation, phorophtye, epiphyte

Arthropod community structures of rice ecosystems in the Philippines

1991 ◽  
Vol 81 (4) ◽  
pp. 407-416 ◽  
Author(s):  
K.L. Heong ◽  
G.B. Aquino ◽  
A.T. Barrion
Keyword(s):  
Abundant Species ◽  
Diversity Indices ◽  
Nilaparvata Lugens ◽  
The Philippines ◽  
Arthropod Community ◽  
Dominant Group ◽  
Cropping Patterns ◽  
Cyrtorhinus Lividipennis ◽  
Positive Correlations ◽  
Relative Differences

AbstractThe arthropod community associated with irrigated rice grown in five sites in Luzon Island, Philippines, was analysed using guild categories. Phytophages and predators were predominant in all sites. The phytophage species were mainly Homoptera and dominated by Nephotettix virescens (Distant), N. nigropictus (Stål) (Cicadellidae), and Nilaparvata lugens (Stål) and Sogatella furcifera (Horváth) (Delphacidae). Predators were mainly Heteroptera with Microvelia douglasi atrolineata Bergoth (Veliidae), Mesovelia vittigera (Horváth) (Mesoveliidae), and Cyrtorhinus lividipennis Reuter (Miridae) as the most abundant species. Spiders were the next dominant group with Pardosa pseudoannulata (Böesenberg & Strand) and three species of Tetragnatha the most common. Differences in species diversity between the sites were easily differentiated using diversity indices. The relative differences in arthropod abundance, species richness and diversity may be attributed to the median temperatures, cropping patterns, and diversity in crop stages and germplasm in the sites. Predator-Homoptera correlations were significant in all cases. High positive correlations were obtained for veliids, spiders and Cyrtorhinus lividipennis, in most sites.

scholarly journals Impact of the COVID-19 pandemic on survivors of human trafficking in the Philippines

2021 ◽  
Vol 6 (2) ◽  
pp. 231-246
Author(s):  
Laura Cordisco Tsai ◽  
Jonna Eleccion ◽  
Ankita Panda
Keyword(s):  
Mental Health ◽  
Food Insecurity ◽  
Human Trafficking ◽  
Rapid Assessment ◽  
Sexual Exploitation ◽  
The Philippines ◽  
Health Concerns ◽  
Emergency Interventions ◽  
The Cross ◽  
Mental Health Concerns

Pandemics disproportionately devastate those who are most vulnerable, including people who have experienced human trafficking. While numerous stakeholders have raised concerns regarding the potential effects of the Covid-19 pandemic on trafficked persons, very limited research exists documenting the effects of Covid-19 upon survivors. To understand the cross- cutting impacts of the Covid-19 pandemic upon human trafficking survivors, we must first listen to survivors themselves about how their basic safety, security, and health have been affected. We present findings from a rapid assessment conducted with human trafficking survivors in the Philippines regarding their experiences, needs, and priorities during the Covid-19 pandemic (n=233). Results of the rapid assessment revealed four primary concerns and priorities from the perspectives of survivors: food insecurity, loss of employment, mental health concerns, and an escalation in crisis incidents, with greater impact reported among those trafficked for sexual exploitation. Findings reinforce the need to broaden definitions of safety and facilitate emergency interventions that prioritize the most urgent needs articulated by survivors themselves.

scholarly journals Species composition and diversity of cast net fisheries in New Calabar River, Niger Delta, Nigeria

2018 ◽  
Vol 4 (1) ◽  
pp. 19-26 ◽  
Author(s):  
HE Dienye ◽  
OA Olopade ◽  
SA Toby
Keyword(s):  
Decapod Crustacean ◽  
Abundant Species ◽  
Diversity Indices ◽  
Fish Stock ◽  
Base Line ◽  
Fisheries Resources ◽  
Fish Samples ◽  
Catch Composition ◽  
Rivers State ◽  
Management And Conservation

A study on the catch composition and diversity of cast net fisheries was conducted between May and August, 2017 in the New Calabar River, Rivers state, using cast net of varying mesh sizes (1.5mm and 2.5mm). Fish samples were collected from three sampling stations, viz. Station1- Aluu, Station 2- Choba and Station 3- Iwofe. The fish species recorded comprised of 26 species under 11 families, and one decapod crustacean. The three most abundant species were; Coptodon guineensis (25.11%), Coptodon zilli (18.56%) both from the Cichlidae family, and Penaeus nitialis (10.90%) from the Penaeidae family, while the least abundant species was Liza grandisquamis (0.13%) from the Mugilidae family. The diversity indices showed that station 2 recorded the highest number of species (21) while station 1 recorded the lowest with (12) species. Simpson’s indexes of diversity, Simpson’s reciprocal index, Shannon- weiner index, and Pielou’s evenness index, were estimated. This study serves as a base line data which will assist relevant bodies in the management and conservation of fisheries resources in the New Calabar River. It is therefore recommended that for an improved and sustainable exploitation and management of fisheries resources of the New Calabar River, proper monitoring and management for fish stock must be done.J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(1): 19-26

scholarly journals I Macroeteroceri della Riserva Naturale Orientata “Laghetti di Marinello” (Sicilia nord-orientale) (Lepidoptera Heterocera)

2012 ◽  
pp. 31-43
Author(s):  
Marco Infusino ◽  
Concetta Calabrò ◽  
Salvatore Saitta ◽  
Stefano Scalercio
Keyword(s):  
Light Source ◽  
Sono State ◽  
Abundant Species ◽  
Diversity Indices ◽  
Climatic Conditions ◽  
Number Of Species ◽  
Sono Stati ◽  
Natural Reserve ◽  
North Eastern ◽  
First Time

Riassunto - Gli scopi di questa ricerca sono quelli di contribuire alla conoscenza della macrolepidotterofauna della Sicilia nord-orientale e di caratterizzare la comunità presente nella Riserva Naturale Orientata “Laghetti di Marinello”. Sono stati effettuati 23 campionamenti tra dicembre 2007 e dicembre 2008 col metodo della caccia al lume. Sono stati catturati 2.537 individui appartenenti a 160 specie, tra cui Chloroclystis v-ata e Laelia coenosa, segnalate per la prima volta in Sicilia; importanti anche le segnalazioni di Calamodes subscudularia, Mythimna languida e M. joannisi, specie piuttosto rare e localizzate. Le specie più abbondanti sono state: Eilema caniola, Eublemma viridula, Idaea filicata, Dysauxes famula e Idaea seriata, che da sole rappresentano il 42% di tutta la comunità, favorite dalla presenza delle rispettive piante nutrici e dall’elevato adattamento alle condizioni climatiche del sito. Il numero di specie e i valori degli indici di diversità indicano un basso livello di biodiversità ospitata, ma la fenologia, le analisi corologica e autoecologica delle specie, insieme ai confronti effettuati con altre faune, indicano una comunità ben caratterizzata e peculiare, diretta espressione delle condizioni abiotiche e biotiche della Riserva.Abstract - Macroheterocera of the Oriented Natural Reserve “Laghetti di Marinello” (north-eastern Sicily) (Lepidoptera: Heterocera). The aim of this research is to contribute to the knowledge of the fauna of macrolepidoptera of north-eastern Sicily and to describe the community present in the Oriented Natural Reserve “Laghetti di Marinello”. 23 samples were carried out from December 2007 to December 2008 using a white vertical sheet reflecting a light source. 2.537 specimens belonging to 160 species were captured. Chloroclystis v-ata and Laelia coenosa were reported for the first time in Sicily, Calamodes subscudularia, Mythimna languida and M. joannisi, very rare and localized species, were also reported. The most abundant species were: Eilema caniola, Eublemma viridula, Idaea filicata, Dysauxes famula and Idaea seriata, which represent the 42% of the whole community and are favoured by the presence of their feeding plants and by their high adaptability to the climatic conditions of the place. The number of species and the values of the diversity indices show a low level of biodiversity, but phenology, chorological and autoecological analysis of the species, with comparisons made with other faunae, show a well characterized and peculiar community, direct expression of the abiotic and biotic conditions of the Reserve.

Review: Biodiversity of forests over limestone in Southeast Asia with emphasis on the Philippines

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Paul John Tolentino ◽  
JOHN RYAN L. NAVIDAD ◽  
MARJORIE DELOS ANGELES ◽  
DESAMARIE ANTONETTE P. FERNANDEZ ◽  
ELAINE LOREEN C. VILLANUEVA ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Endemic Species ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Review Of Literature ◽  
Comprehensive Review ◽  
Biological Resources ◽  
Natural Park ◽  
Animal Diversity ◽  
The Status

Abstract. Tolentino PJS, Navidad JRL, Angeles MD, Fernandez AP, Villanueva ELC, Obena RDR, Buot Jr IE. 2020. Review: Biodiversity of forests over limestone in Southeast Asia with emphasis on the Philippines. Biodiversitas 21: 1597-1613. A comprehensive review of literature was carried out to determine the status of plant and animal diversity on forests over limestone in Southeast Asia (SEA), particularly in the Philippines. Angiosperm records are available in Peninsular Malaysia (1216 spp.); West Java and Seram Indonesia (101 and 149 spp., respectively); Laos (135 spp.); Thailand and Myanmar (1 sp.); and Limestone areas in Vietnam. Pteridophytes were recorded in Malaysia (32 spp.) while Bryophytes are recorded in Peninsular Malaysia (59 spp.). In the Philippines, there are plant records in: Masbate (61 spp.); Isabela (169 spp. Pteridophytes); Bohol (12 spp.), and Samar forests over limestone (29 spp. palms and 20 spp. orchids). A floral assessment in Samar Island Natural Park (SINP) includes species (212 spp.) that can possibly be found but are not limited to karsts. New Philippine endemic species are also recorded in Cebu, Palawan, and Panay Island. There are animal records in SEA including Vietnam (Bats-36, Bird-1, and Langurs-5 spp.); Malaysia (Sciuridae-1, Bats-28, Birds-129, Reptiles-17, and Invertebrates-74 spp.); Thailand (Murids-12, Reptiles-11, and Amphibian-1 sp.); and Myanmar (Reptiles-15 spp.). Records in the Philippines include: Mammals (Bicol-9, Mt. Irid-24, Mt. Aruyan-1, and Cebu-1 species), and; Birds (Cebu-1 sp.). A terrestrial faunal assessment in SINP includes species (182 spp.) that can possibly be found but are not limited to karsts. Forests over limestone are still largely understudied and the potential of discovering species is high. Further research is critical to establish science-based initiatives and policies that will protect and conserve limestone ecosystem biodiversity while allowing the utilization of its biological resources at a sustainable level.

Spatial patterns of meiofauna and diversity of nematode species assemblages in the Uvea lagoon (Loyalty Islands, South Pacific)

2008 ◽  
Vol 88 (5) ◽  
pp. 931-940 ◽  
Author(s):  
Y. Guo ◽  
M.-N. Helleouet ◽  
G. Boucher
Keyword(s):  
Species Richness ◽  
Spatial Patterns ◽  
Environmental Parameters ◽  
Nematode Species ◽  
Abundant Species ◽  
Diversity Indices ◽  
Species Assemblages ◽  
Leeward Side ◽  
Local Composition ◽  
Total Species Richness

Meiofauna assemblages were investigated at 15 stations on triplicated samples in the Uvea Atoll (Loyalty Islands) in relation to 9 selected environmental parameters. Spatial patterns and variability of meiofauna density were quantified according to location, macrofauna and nematode species assemblages. Meiofauna was dominated by ciliates and nematodes. Densities of total meiofauna and of most of the meiofauna taxa were significantly higher in the back reef North Pléiades stations than the leeward side of the Island. The highest correlation between biotic patterns and environmental parameters that best explains the pattern was with sediment thickness and to a lesser extent organic matter, C/N ratio and depth. One hundred and thirty-four nematode species were identified with four dominant species Chromadora macrolaimoides, an undescribed species of Bolbonema, Daptonema svalbardense and Prochromadorella septempapillata. Three significantly different nematode species assemblages were detected in two of the previously described macrofauna assemblages by cluster analysis and multidimensional scaling methods suggesting that nematodes are more sensible ecological indicators than macrofauna. Diversity indices based on dominance were not significantly different among the three nematode species assemblages but indices based on species richness and rarefaction were significantly higher leeward of Uvea Island. Estimates of total species richness showed no sign of stabilizing with sample size. However, rare species stabilized very quickly, whereas abundant species were added with increasing sampling coverage, indicating a high spatial variability of the local composition of nematodes.

scholarly journals Seasonal variations of the ichthyoplankton assemblage in the Yangtze Estuary and its relationship with environmental factors

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6482 ◽  
Author(s):  
Hui Zhang ◽  
Weiwei Xian ◽  
Shude Liu
Keyword(s):  
Seasonal Variations ◽  
Historical Data ◽  
Wiener Index ◽  
Abundant Species ◽  
Diversity Indices ◽  
Yangtze Estuary ◽  
The Yangtze Estuary ◽  
Factors Affecting ◽  
Annual Variations ◽  
Major Factors

Seasonal variations of the ichthyoplankton assemblage and its relationship with the environment were analyzed based on four seasonal surveys during 2012. Historical data was collected to be compared with results from previous years in order to indicate the seasonal and inter-annual variation of the ichthyoplankton assemblage in the Yangtze Estuary and the adjacent waters. A total of 3,688 individuals belonging to 5 orders, 9 families, and 15 species were collected. No samples were collected in the winter cruise. In 2012, all samples were separated into four ecotypes, which is comparable with the historical data from previous years. The Engraulis japonicus was the most abundant species of all teleost fishes. The E. japonicus was captured in every season and contributed the most to the abundance of ichthyoplankton, which was greater than that of previous years. This result may be due to the periodic fluctuations of E. japonicus or from the displacement of spawning grounds offshore for environmental reasons. The diversity indices of the assemblage were significantly different among seasons, with the number and abundance of the species peaking in the spring, while richness, evenness and diversity indices peaked in the autumn. The species richness of the ichthyoplankton varied from 0.74 to 1.62, the Pielou evenness index varied from 0.10 to 0.49 and the Shannon–Wiener index varied from 0.19 to 1.04. The results of CCA analysis showed that the major factors affecting the ichthyoplankton assemblage differed throughout the seasons. Chla was the key factor affecting the ichthyoplankton in 2012. These seasonal and inter-annual variations likely resulted from migrations associated with fish spawning as well as the environment. Compared with data from previous studies, the relationship between the assemblage structure of ichthyoplankton and corresponding environmental variables have undergone a decline.

scholarly journals Quantitative analysis, distributional pattern and species diversity of woody plant species of Lamberi Forest Range, Rajouri, J&K, India

2018 ◽  
Vol 10 (1) ◽  
pp. 522-527
Author(s):  
Jyoti Sharma ◽  
Anil K. Raina
Keyword(s):  
Quantitative Analysis ◽  
Species Diversity ◽  
Plant Species ◽  
Woody Plant ◽  
Diversity Indices ◽  
Distributional Pattern ◽  
Importance Value Index ◽  
Importance Value ◽  
Pinus Roxburghii ◽  
Woody Plant Species

Quantitative analysis, distributional pattern and species diversity of woody plant species of Lamberi Range of Rajouri Forest division, J&K, has been carried out by laying 50 quadrats (10m X 10m size) for trees and 100 quadrats (5m X 5m size) for shrubs. Various phytosociological parameters like frequency, density, abundance, importance value index IVI and diversity indices for trees and shrubs has been used to reveal the plant community structure of the area. The abundance to frequency ratio (A/F) for different species was determined to assess the distribution pattern of the species (regular <0.025, random 0.025-0.05 and contagious >0.05) which indicated the contagious distribution for all the species. Survey of the area revealed presence of 63 woody plant species from the study area comprising of 43 trees and 20 shrubs. Pinus roxburghii (IVI 49.7, Abundance 81.1) and Carissa opaca (IVI 81.12 abundance 7.05) have been recorded as the dominant tree and shrub, respectively, of the area. The computation of diversity indices showed that species richness and evenness i.e Shannon- Weiner’s, Margalef’s and Menhinick’s remained high for trees and low for shrubs. Simpson’s index of dominance was also high for trees. Species which needs priorities for conservation and protection and also required to be monitored have also been highlighted.

scholarly journals Keanekaragaman Coccinellidae Predator Pada Beberapa Ekosistem Perkebunan di Kabupaten Dharmasraya

2019 ◽  
Vol 10 (2) ◽  
pp. 157-168
Author(s):  
Siska Chiko Efendi ◽  
Yaherwandi Yaherwandi ◽  
Ade Noferta ◽  
Aditya Muhammad
Keyword(s):  
Species Diversity ◽  
Dominant Species ◽  
Wiener Index ◽  
Simpson Index ◽  
Importance Value Index ◽  
Importance Value ◽  
Important Value Index ◽  
Sweep Net ◽  
Species Importance

The objectives of this research were to study the species diversity and to determine the dominant species of lady bird beetle predators in high land plantation ecosystem in West Sumatera. The samples were taken by hand collection and sweep net. The data of species diversity were analyzed using Shannon-Wiener index, evenness of species were analyzed by Simpson index, and  dominant species using important value index. The results showed that there were 91 individuals predator found which consisted of 7 species. The highest  species diversity (1.74) and evenness (0.89) were found in Pulau Punjung. The lowest diversity and evennes (1,40) and (0,75) was found in Koto Besar. The highest  species importance value index was 1,00, that was Menochillus sexmaculatus.

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