CHANGES IN SPECIES COMPOSITION AND LITTER DYNAMICS ALONG A FRAGMENT SIZE GRADIENT IN SUBTROPICAL BROADLEAVED FORESTS OF MEGHALAYA, NORTHEAST INDIA

AbstractForest carnivores are threatened globally by logging and forest fragmentation yet we know relatively little about how such change affects predator populations. This is especially true in Madagascar, where carnivores have not been extensively studied. To understand better the effects of logging and fragmentation on Malagasy carnivores we evaluated species composition, density of fossa Cryptoprocta ferox and Malagasy civet Fossa fossana, and carnivore occupancy in central-eastern Madagascar. We photographically-sampled carnivores in two contiguous (primary and selectively-logged) and two fragmented rainforests (fragments <2.5 and >15 km from intact forest). Species composition varied, with more native carnivores in the contiguous than fragmented rainforests. F. fossana was absent from fragmented rainforests and at a lower density in selectively-logged than in primary rainforest (mean 1.38±SE 0.22 and 3.19±SE 0.55 individuals km−2, respectively). C. ferox was detected in fragments <2.5 km from forest and had similar densities in primary and selectively-logged forests (0.12±SE 0.05 and 0.09±SE 0.04 adults km−2, respectively) but was absent in fragments >15 km from forest. We identified only two protected areas in Madagascar that may maintain >300 adult C. ferox. Occupancy of broad-striped mongoose Galidictis fasciata was positively related to fragment size whereas occupancy of ring-tailed mongoose Galidia elegans elegans was negatively associated with increasing exotic wild cat (Felis spp.) activity at a camera site. Degraded rainforest fragments are difficult environments for Malagasy carnivores to occupy; there is a need to prioritize the reconnection and maintenance of contiguous forest tracts.

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Effect of traditional management practices on woody species composition and structure in montane subtropical forests of Meghalaya, Northeast India

Journal of Mountain Science ◽

10.1007/s11629-016-4145-6 ◽

2017 ◽

Vol 14 (8) ◽

pp. 1500-1512 ◽

Cited By ~ 3

Author(s):

Aabid Hussain Mir ◽

Krishna Upadhaya

Keyword(s):

Species Composition ◽

Management Practices ◽

Woody Species ◽

Northeast India ◽

Traditional Management ◽

Subtropical Forests ◽

Composition And Structure ◽

Species Composition And Structure

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Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d210654 ◽

2020 ◽

Vol 21 (6) ◽

Author(s):

Aosanen Ao ◽

Sapu Changkija ◽

S. K. Tripathi

Keyword(s):

Population Structure ◽

Species Diversity ◽

Species Composition ◽

Tree Species ◽

Basal Area ◽

Diversity Indices ◽

Northeast India ◽

Current Status ◽

Wildlife Sanctuary ◽

Regeneration Status

Abstract. Ao A, Changkija S, Tripathi SK. 2020. Species diversity, population structure, and regeneration status of trees in Fakim Wildlife Sanctuary, Nagaland, Northeast India. Biodiversitas 21: 2777-2785. The plant species composition and diversity represent the overall health of the forest ecosystems and provide useful insight on forest conservation, and the species regeneration is important in assessing the potential of the forests to serve the society on sustained basis. This present study aimed to assess the species diversity, population structure, and regeneration status of the trees in temperate forest of Fakim Wildlife Sanctuary, Nagaland, Northeast India. Tree species composition, population structure and regeneration status were analyzed by randomly establishing eight plots of 0.1 ha within the sanctuary. Density, basal area, abundance, evenness, and other diversity indices were calculated for mature trees with girth at breast height (GBH) ≥ 30 cm. A total of 60 tree species belonging to 40 genera and 27 families were recorded. The most dominant families recorded were Lauraceae and Rosaceae. The total tree density recorded from the forest was 432.5 individuals ha-1 with a basal area 42.8 m2 ha-1. Cinnamomum zeylanicum and Lithocarpus pachyphyllus had the highest density with 17.58 individuals ha-1 and Lithocarpus pachyphyllus had the highest basal area with 2.64 m2 ha-1. The species with the highest IVI was Betula alnoides (17.13). Girth class of 30-60 cm had the highest density and basal area with 280 individuals ha-1 and 20.7 m2 ha-1. The diversity indices such as Shannon-Wiener index, Simpson index, Pielou evenness index, and Margalef species richness index were 3.90, 0.93, 0.92, and 11.59, respectively in the wildlife sanctuary. The present study showed that 41% of tree species exhibited good regeneration status, 31% as fair regeneration, 8% as poor regeneration and 20% had no regeneration. The present data will be useful to understand the current status of tree species and will serve as baseline information to the forest department, policymakers and conservationists to develop management plans for the conservation of priority species in the area.

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Long-term influence of deforestation on tree species composition and litter dynamics of a tropical rain forest in Puerto Rico

Forest Ecology and Management ◽

10.1016/0378-1127(95)03586-9 ◽

1995 ◽

Vol 78 (1-3) ◽

pp. 147-157 ◽

Cited By ~ 70

Author(s):

Xiaoming Zou ◽

Carol P. Zucca ◽

Robert B. Waide ◽

William H. McDowell

Keyword(s):

Puerto Rico ◽

Species Composition ◽

Tree Species ◽

Rain Forest ◽

Tropical Rain Forest ◽

Tree Species Composition ◽

Litter Dynamics

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Tree species composition, diversity and soil organic carbon stock in homegardens and shifting cultivation fallows of Mizoram, Northeast India

Vegetos- An International Journal of Plant Research ◽

10.1007/s42535-021-00194-1 ◽

2021 ◽

Vol 34 (1) ◽

pp. 220-228

Author(s):

Soibam Lanabir Singh ◽

Uttam Kumar Sahoo

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Species Composition ◽

Tree Species ◽

Shifting Cultivation ◽

Carbon Stock ◽

Northeast India ◽

Tree Species Composition ◽

Soil Organic Carbon Stock ◽

Organic Carbon Stock

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Injuries to the Coronoid Process of the Ulna with Involvement of the Lesser Sigmoid Notch

Zeitschrift für Orthopädie und Unfallchirurgie ◽

10.1055/a-1263-1742 ◽

2020 ◽

Author(s):

Valentin Rausch ◽

Sina Neugebauer ◽

Tim Leschinger ◽

Lars Müller ◽

Kilian Wegmann ◽

...

Keyword(s):

Fragment Size ◽

Coronoid Process ◽

Annular Ligament ◽

Concomitant Injuries ◽

Proximal Ulna ◽

Sigmoid Notch ◽

Coronoid Fractures ◽

The Mean ◽

The Stability ◽

Arthritic Changes

Abstract Introduction This study aimed to describe the involvement of the lesser sigmoid notch in fractures to the coronoid process. We hypothesized that injuries to the lateral aspect of the coronoid process regularly involve the annular ligament insertion at the anterior lesser sigmoid notch. Material and Methods Patients treated for a coronoid process fracture at our institution between 06/2011 and 07/2018 were included. We excluded patients < 18 years, patients with arthritic changes or previous operative treatment to the elbow, and patients with concomitant injuries to the proximal ulna. In patients with involvement of the lesser sigmoid notch, the coronoid height and fragment size (anteroposterior, mediolateral, and craniocaudal) were measured. Results Seventy-two patients (mean age: 47 years ± 17.6) could be included in the study. Twenty-one patients (29.2%) had a fracture involving the lateral sigmoid notch. The mean anteroposterior fragment length was 7 ± 1.6 mm. The fragment affected a mean of 43 ± 10.8% of the coronoid height. The mean mediolateral size of the fragment was 10 ± 5.0 mm, and the mean cranio-caudal size was 7 ± 2.7 mm. Conclusion Coronoid fractures regularly include the lesser sigmoid notch. These injuries possibly affect the anterior annular ligament insertion which is important for the stability of the proximal radioulnar joint and varus stability of the elbow.

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