scholarly journals Species richness of trees in disturbed habitats within a protected area and its implications for conservation: The case of Mt. Apo Natural Park, Mindanao Island, Philippines

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
BENEDICT R. ZAPANTA ◽  
MARION JOHN MICHAEL M. ACHONDO ◽  
AARON FROILAN M. RAGANAS ◽  
FRITZIE A. ◽  
AILEEN GRACE D. DELIMA ◽  
...  
Keyword(s):  
Species Richness ◽  
Forest Management ◽  
Threatened Species ◽  
Tree Species ◽  
Protected Area ◽  
National Park ◽  
Natural Park ◽  
Disturbed Areas ◽  
Baseline Information ◽  
Disturbed Habitats

Abstract. Zapanta BR, Achondo MJMM, Raganas AFM, Camino FA, Delima, AGD, Mantiquilla JA, Puentespina, RP, Salvaña FRP. 2019. Species richness of trees in disturbed habitats within a protected area and its implications for conservation: The case of Mt. Apo Natural Park, Mindanao Island, Philippines. Biodiversitas 20: 2081-2091. In order to improve forest management, it is fundamental to develop baseline information on species distribution i.e., richness and presence of endemic and threatened species in varying conditions of environmental degradation. In the Philippines, there is a growing number of studies which provided important information on pristine habitats (e.g. primary forest), however, there is a scarcity of studies on disturbed habitats. Here, we present baseline information on the tree species diversity in disturbed habitats like those portions converted to agricultural lands planted with fruit trees and other commercial crops within Mt. Apo National Park. A total of 139 tree species including a single gymnosperm was identified within the study sites. Of the species identified, the dominant families included Moraceae, Euphorbiaceae, Fabaceae, Meliaceae, Lauraceae, Myrtaceae, Arecaceae, Dipterocarpaceae, and Verbenaceae. Nineteen species were considered endemic including the Mindanao endemic, Lindera apoensis. Within this number, 47% are considered threatened on their range and four species viz. Parashorea malaanonan, Shorea contorta, and Shorea negrosensis are Critically Endangered with decreasing population records. The results of this current study suggest that disturbed habitats in Mt. Apo Natural Park still harbor endemic and threatened species, which are ecologically and economically important. Establishing a list of tree species in the area provides important information needed for the restoration of some disturbed areas which are abandoned by locals. The presence of endemic and threatened species also indicates that conservation, protection, and forest management efforts should be extended and allocated towards disturbed areas in the national park.

scholarly journals Baseline Assessments of Wildlife Biodiversity Within Selected Areas of Central Visayas, Philippines

2021 ◽  
Vol 6 (2) ◽  
pp. 27-34
Author(s):  
RP Jose ◽  
WA Aureo ◽  
CI Narido ◽  
TD Reyes Jr ◽  
MB Sarnowski
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Diversity Index ◽  
Population Trends ◽  
Species Richness And Diversity ◽  
Natural Park ◽  
Biodiversity Inventories ◽  
Baseline Information ◽  
High Diversity ◽  
Areas Of Protection

A comprehensive inventory of faunal biodiversity was conducted within three Key Biodiversity Areas of Central Visayas. Mt. Bandilaan Natural Park (MBNP), Balinsasayao Twin Lakes Natural Park (BTLNP), and Rajah Sikatuna Protected Landscape (RSPL). Three primary wildlife groups were surveyed: bats, birds and amphibians. Species diversity and population trends were then analyzed to assess areas of biodiversity importance. RSPL generally had the highest species richness and diversity index while MBNP consistently had the lowest. When pooled. The surveyed areas resulted in a high diversity index and rate of endemicity showing the importance of multiple areas of protection. These findings can be utilized to prioritize habitat protection as well as to serve as a baseline information for future biodiversity inventories. J. Biodivers. Conserv. Bioresour. Manag. 2020, 6(2): 27-34

scholarly journals Factors Influencing the Natural Forest Regeneration at Khadimnagar National Park, Bangladesh

2021 ◽  
Vol 11 (1) ◽  
pp. 73-83
Author(s):  
MAHEDI HASAN LIMON ◽  
SAIDA HOSSAIN ARA ◽  
MOHAMMAD GOLAM KIBRIA
Keyword(s):  
Species Richness ◽  
Bulk Density ◽  
Total Variation ◽  
Soil Ph ◽  
Tree Species ◽  
Natural Regeneration ◽  
National Park ◽  
Canopy Openness ◽  
Site Factors ◽  
Tree Species Richness

Natural regeneration is an indicator of a healthy forest, hence, understanding the influence of site factors on natural regeneration is a significant concern for ecologists. This work aimed to assess the impact of site factors on natural tree regeneration at Khadimnagar National Park (KNP). Biotic factors (tree density, tree species richness, and basal area), physical factors (elevation, canopy openness), and soil properties (bulk density, moisture content, soil pH, organic matter, sand, silt, and clay) data were investigated from 71 sample plots to examine their effects on natural regeneration density and richness in KNP. Stepwise multiple linear regression analysis was done to predict both regeneration density and regeneration richness. The results showed that soil pH (p<0.001), canopy openness (p<0.001), tree species richness (p<0.01), and bulk density (p<0.01) had a significant effect on regeneration density, explaining 42% of the total variation. Regeneration richness was driven by four factors: tree species richness (p<0.01), soil pH (p<0.001), elevation (p<0.01), and canopy openness (p<0.01) with a model that explained 60% of the total variation. This study observed that soil pH, tree species richness, and canopy openness are the main controlling factors that influenced both the density and richness of regenerating species in KNP. Therefore, these findings have implications for natural resource management, especially in selecting suitable silvicultural systems in a tropical forest under protected area management where enhanced tree cover and conservation of biodiversity are needed.

Potential impact of climate change on the spatial distribution of key forest tree species in Italy under RCP4.5 for 2050s

2020 ◽  
Author(s):  
Matteo Pecchi ◽  
Maurizio Marchi ◽  
Marco Moriondo ◽  
Giovanni Forzieri ◽  
Marco Ammoniaci ◽  
...  
Keyword(s):  
Climate Change ◽  
Spatial Distribution ◽  
Species Richness ◽  
Forest Management ◽  
Tree Species ◽  
Climate Models ◽  
Forest Growth ◽  
Mixed Stands ◽  
Impact Of Climate Change ◽  
Potential Impact

Abstract Background: Forests provide a range of ecosystem services essential for the human wellbeing and their ability is influenced by climate background and further connected to forest management strategies. Italy is a well-known biodiversity hotspot but an uncertainty assessment of the potential impact of climate change is still missing in this country. The aim of this paper is model the potential impact of climate change on 19 tree species occurring across the Italian forests using a species distribution modelling approach, six different Global Circulation Models (GCMs) and one Regional Climate Models (RCMs) for 2050s under an intermediate forcing scenario (RCP 4.5). Results: While no sensible variation in the spatial distribution of the total forested area has been predicted with some tree species gaining space and covering the spatial contractions of others, results showed substantial differences between each species and different climate models. The analyses reported an unchanged amount of total land suitability to forest growth in mountain areas while smaller values were predicted for valleys and floodplains than high-elevation areas. Pure woods were predicted as the most influenced when compared with mixed stands which are characterized by a greater species richness and therefore a supposed higher level of biodiversity and resilience to climate change threatens. Pure softwood stands (e.g. Pinus, Abies) were more sensitive than hardwoods (e.g. Fagus, Quercus), probably due to their artificial origin which established pure stands with tree species generally more prone to admixture with others in (semi)-natural ecosystems.Conclusions: Forest management could play a fundamental role to reduce the potential impact of climate change on forest ecosystems. Silvicultural practices should be aimed at increasing the species richness and favouring hardwoods currently growing as dominating species under conifers canopy, stimulating the natural regeneration, gene flow and supporting (spatial) migration processes.

scholarly journals Spider assemblages on tree trunks in primeval deciduous forests of the Białowieża National Park in eastern Poland

2018 ◽  
Vol 29 (2) ◽  
pp. 75-85
Author(s):  
Marzena Stańska ◽  
Tomasz Stański ◽  
Joanna Hawryluk
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
National Park ◽  
Riparian Forest ◽  
Abundant Species ◽  
Deciduous Forests ◽  
Forest Types ◽  
Numerous Species ◽  
Białowieża National Park ◽  
Spider Abundance

We analysed spider assemblages of tree trunks in an oak-lime-hornbeam forest, an ash-alder riparian forest and an alder carr in the primeval stands of the Białowieża National Park. Spiders were collected from June 1998 to October 2000 using bark traps. A total of 2,182 spider individuals, belonging to 43 species and 14 families was collected. The forest types differed in the spider abundance and species richness. The differences probably resulted from different tree species and different environmental conditions in the forest types. The most numerous species in oak-lime-hornbeam forest and in alder carr was Amaurobius fenestralis, whereas Anyphaena accentuatawas the most abundant species in ash-alder riparian forest. Four species (Amaurobius fenestralis, Anyphaena accentuata, Segestria senoculataand Neriene montana) were collected in each month (March – October), whereas most species were recorded sporadically or in some periods.

scholarly journals Pteridophytic diversity in human-inhabited buffer zone of Murlen National Park, Mizoram, India

Check List ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 2081
Author(s):  
Sachin Sharma ◽  
Bhupendra S. Kholia ◽  
Ramesh Kumar ◽  
Amit Kumar
Keyword(s):  
Species Richness ◽  
Protected Area ◽  
National Park ◽  
Buffer Zone ◽  
Future Research ◽  
Site Preference

A taxonomic inventorization of pteridophytes occurring in a human inhabited buffer zone of Murlen National Park, India, was conducted in 2012 and 2013. This survey revealed 35 species belonging to 27 genera and 15 families. Polypodiaceae was recorded as dominant family, represented by six genera and eight species, followed by Pteridaceae (three genera and six species) and Lycopodiaceae (three genera and four species). Of the recorded species, 23 species were terrestrial, 11 (epiphytic) and two (lithophytic) in their habit forms. The species richness was highest in Tualpui village, with 11 species, followed by Rabung (7) and Ngur (6). The site preference of species among the villages is discussed. These data will provide baseline for future research and monitoring of pteridophytic vegetation in this protected area, as well as in similar habitats in the adjacent areas. 

Tree Regeneration Characteristics in Limestone Forests of the Cat Ba National Park, Vietnam

2021 ◽  
Author(s):  
Van Vien Pham ◽  
Christian Ammer ◽  
Peter Annighöfer ◽  
Steffi Heinrichs
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Tree Species ◽  
National Park ◽  
Forest Regeneration ◽  
Tree Regeneration ◽  
Conservation Strategy ◽  
Tree Species Diversity ◽  
Site Factor ◽  
Overstory Tree

Abstract Background: Forest regeneration is decisive for future forest development and therefore of major concern to forest ecologists. The ability of overstory tree species to regenerate successfully is important for the preservation of tree species diversity and its associated flora and fauna. This study investigated forest regeneration dynamics in the Cat Ba National Park, a biodiversity hotpot in Vietnam. Data was collected from 90 sample plots and 450 sub-sample plots in the regional limestone forests. We compared species richness between the regeneration and overstory tree layers and examined the effect of environmental factors on the occurrence of regeneration. We developed five ratios to relate overstory and regeneration richness and diversity. Results: We found 97 tree species in the regeneration layer compared to 136 species in the overstory layer. Average regeneration density was 3,764 ± 1,601 per ha. Around 70% of the overstory tree species generated offspring. Of the tree species threatened according to The International Union for Conservation of Nature’s Red List of Threatened Species, only 36% were found in the regeneration layer. A principal component analysis provided evidence that the regeneration of tree species was linked to terrain factors (percentage of rock surface, slope) and soil properties (Cation exchange capacity, pH, humus content, soil moisture, soil depth). Contrary to our expectations, the prevailing light conditions (total site factor, gap fraction, openness, indirect site factor, direct site factor) had no influence on regeneration density and composition, probably due to the small gradient in light availability. Conclusion: We conclude that tree species richness in Cat Ba National Park appears to be declining at present. We suggest similar investigations in other biodiversity hotspots to learn whether the observed trend is a global phenomenon. In any case, a conservation strategy for the threatened tree species in the Cat Ba National Park needs to be developed if tree species diversity is to be maintained.

Post-dispersal seed removal by rodents in Ranomafana rain forest, Madagascar

2017 ◽  
Vol 33 (3) ◽  
pp. 232-236 ◽  
Author(s):  
Onja H. Razafindratsima
Keyword(s):  
Seed Dispersal ◽  
Tree Species ◽  
National Park ◽  
Camera Traps ◽  
Rodent Species ◽  
Scatter Hoarding ◽  
Disturbed Habitat ◽  
Disturbed Habitats ◽  
Secondary Seed Dispersal

Abstract:Seed-consuming rodents are increasingly recognized for their roles in the maintenance of tree species diversity, by acting on crucial post seed-dispersal processes. Yet, studies examining the extent to which rodents may act as secondary seed dispersers and/or predators in Madagascar's forests are limited. Thread-marking seed experiments were run to address this, using the seeds of two native large-seeded, frugivore-dispersed tree species (Abrahamia thouvenotii and Cryptocarya crassifolia), in disturbed and less-disturbed habitats in the rain forests of Ranomafana National Park, during the dry season. Data show that post-dispersal handling of seeds by rodents (predation and removal) was significantly lower in disturbed than in less-disturbed habitats (1.31–3.78 times lower; n = 2200). Also, seeds were more likely to be predated or left on the forest ground after removal than being larder- or scatter-hoarded: 27–78% of the removed seeds were found on the ground, <12% found in burrows and there was no evidence of scatter-hoarding (n = 132). Based on pictures from camera traps, the native rodent species, Nesomys rufus, was potentially responsible for seed predation and/or removal in the less-disturbed habitat; but no indication of the rodent species active in the disturbed habitat was obtained. The lack of scatter-hoarding suggests a limited role of rodents in secondary seed dispersal in this system. These findings form a preliminary account of the potential roles of rodents in post seed-dispersal processes in Madagascar's forests, but this warrants further study.

scholarly journals Avian richness of the Basanta Protected Forest, far-western lowland Nepal: Implication for conservation

2020 ◽  
Vol 4 (2) ◽  
pp. 68-84
Author(s):  
Hiru Lal Dangaura ◽  
Naresh Pandey ◽  
Dhirendra Bahadur Chand ◽  
Krishna Prasad Bhusal
Keyword(s):  
Species Richness ◽  
National Park ◽  
Bird Species ◽  
Temporal Distribution ◽  
Avian Community ◽  
Conservation Implications ◽  
The Family ◽  
Farmland Bird ◽  
Baseline Information ◽  
Gyps Bengalensis

Birds are important components of biodiversity and acts as an indicator of habitat quality, productivity and stability. This study aimed to document species richness and assess the temporal distribution pattern of globally threatened bird species in the Basanta Protected Forest (BPF), one of the largest corridor forests which connects Dudhwa National Park (India) with protected areas of western lowland Nepal. During study period of ten years from 2010 to 2019, a total of 381 bird species from 78 families of 19 orders were recorded. Order Passeriformes had the highest species richness (n=180) followed by order Accipitriformes and Charadriiformes. Among the families, the family Muscicapidae had the highest species richness (n=31), followed by Accipitridae and Anatidae. Majority of bird recorded were forest bird followed by wetland and farmland bird species. Fifteen globally threatened species like red-headed vulture (Sarcogyps calvus), white-rumped vulture (Gyps bengalensis), slender-billed vulture (Gyps tenuirostris), steppe eagle (Aquila nipalensis) and Egyptian vulture (Neophron percnopterus) were recorded in the BPF. Extensive avian survey in the BPF is important for further exploration of avian community along with its driving factors, which might play a crucial role in developing baseline information and implementing conservation implications.

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