Spatial patterns and habitat associations of Fagaceae in a hill dipterocarp forest in Ulu Gadut, West Sumatra

Abstract:Spatial distribution patterns and habitat associations of Fagaceae species in a Fagaceae-codominated hill forest in Sumatra were investigated. Ten Fagaceae species believed to be zoochorous (animal-dispersed seed) and five codominant canopy and emergent anemochorous (wind-dispersed seed) species from Anacardiaceae and Dipterocarpaceae were studied. Five Fagaceae species and all codominant anemochorous species were significantly aggregated while the other five Fagaceae species showed a random distribution pattern. The median distance of small saplings from the nearest reproductively mature tree tended to be shorter for aggregated species than spatially random species. This implied that some Fagaceae species dispersed over longer distances than anemochorous species. Relationships between four habitat variables and distribution of the target species were examined with torus-translation tests. ThreeQuercusand oneLithocarpusspecies showed positive habitat associations. TwoQuercusspecies aggregated at the preferred habitat, but the others were randomly distributed. Thus tree species with specific habitat preference do not only aggregate at the preferred habitat. The three ridge-specialistQuercusspecies showed gradual changes in habitat association, which could reflect avoidance of competition among the species. Most of theLithocarpusspecies showed little correlation with habitat variables. Coexistence of the threeQuercusspecies partly reflected subtle differences in topographical preferences. Distribution of five of the sixLithocarpusspecies was unrelated to topography, so other mechanisms must be sought to account for the maintenance of coexistence in this species-rich genus.

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Species–habitat associations in a Sri Lankan dipterocarp forest

Journal of Tropical Ecology ◽

10.1017/s0266467406003282 ◽

2006 ◽

Vol 22 (4) ◽

pp. 371-384 ◽

Cited By ~ 98

Author(s):

C. V. S. Gunatilleke ◽

I. A. U. N. Gunatilleke ◽

S. Esufali ◽

K. E. Harms ◽

P. M. S. Ashton ◽

...

Keyword(s):

Basal Area ◽

Distribution Patterns ◽

Habitat Associations ◽

Stem Density ◽

Sri Lankan ◽

Dipterocarp Forest ◽

Lower Elevation ◽

Habitat Specialists ◽

Hydrological Variation ◽

Fisher’S Alpha

Forest structure and species distribution patterns were examined among eight topographically defined habitats for the 205 species with stems ≥ 1 cm dbh inhabiting a 25-ha plot in the Sinharaja rain forest, Sri Lanka. The habitats were steep spurs, less-steep spurs, steep gullies and less-steep gullies, all at either lower or upper elevations. Mean stem density was significantly greater on the upper spurs than in the lower, less-steep gullies. Stem density was also higher on spurs than in gullies within each elevation category and in each upper-elevation habitat than in its corresponding lower-elevation habitat. Basal area varied less among habitats, but followed similar trends to stem density. Species richness and Fisher's alpha were lower in the upper-elevation habitats than in the lower-elevation habitats. These differences appeared to be related to the abundances of the dominant species. Of the 125 species subjected to torus-translation tests, 99 species (abundant and less abundant and those in different strata) showed at least one positive or negative association to one or more of the habitats. Species associations were relatively more frequent with the lower-elevation gullies. These and the previous findings on seedling ecophysiology, morphology and anatomy of some of the habitat specialists suggest that edaphic and hydrological variation related to topography, accompanied by canopy disturbances of varying intensity, type and extent along the catenal landscape, plays a major role in habitat partitioning in this forest.

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Tree guild composition of a hill dipterocarp forest in West Sumatra, Indonesia

Tropics ◽

10.3759/tropics.18.143 ◽

2009 ◽

Vol 18 (3) ◽

pp. 143-154 ◽

Cited By ~ 4

Author(s):

Tsuyoshi YONEDA ◽

Sen NISHIMURA ◽

Shinji FUJII ◽

Erizal MUKHTAR

Keyword(s):

Dipterocarp Forest ◽

West Sumatra ◽

Guild Composition ◽

Hill Dipterocarp Forest

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Sprouting traits of Fagaceae species in a hill dipterocarp forest, Ulu Gadut, West Sumatra

Journal of Tropical Ecology ◽

10.1017/s0266467410000544 ◽

2010 ◽

Vol 27 (1) ◽

pp. 107-110 ◽

Cited By ~ 2

Author(s):

Sen Nishimura ◽

Tsuyoshi Yoneda ◽

Shinji Fujii ◽

Erizal Mukhtar ◽

Mamoru Kanzaki ◽

...

Keyword(s):

Tree Species ◽

High Frequency ◽

Size Structure ◽

Field Studies ◽

Forest Stand ◽

Regeneration Strategy ◽

Dipterocarp Forest ◽

Trade Offs ◽

West Sumatra ◽

Hill Dipterocarp Forest

The size distribution of a tree species gives important information about its regeneration strategy. For example, a tree species that regenerates primarily by sprouting will, in theory, have fewer seedlings than species that regenerate from seedlings, which generally form an L-shaped population size structure because of trade-offs in resource allocation between vegetative sprouting and sexual reproduction (Bellingham & Sparrow 2000, Loehle 2000). The results of some field studies suggest that the number of seedlings decreases with increasing dominance of multi-stemmed sprouters (Krugeret al. 1997, Zimmermanet al. 1994). In their study of four co-occurring species ofCastanopsis(Fagaceae), Nanamiet al. (2004) showed that species with a high frequency of sprouting adults had fewer juveniles and vice versa. This suggested that these species were able to co-exist as a result of trade-offs between investment in seedlings and sprouting. In this study, we investigated the sprouting trait of 17 co-occurring Fagaceae species in a Sumatran hill forest. The forest stand at this site shows a varied population structure across species, and hence, should have a varied life history. We tested the correlation between population skewness and proportion of sprouting trees, following the methods of Nanamiet al. (2004). We hypothesized that the species that frequently form multi-stemmed sprouts will show a lower turnover of individuals because multi-stemmed architecture favours persistence (Bellingham & Sparrow 2009).

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Quantifying disturbed hill dipterocarp forest lands in Ulu Tembeling, Malaysia with HRV/SPOT images

ISPRS Journal of Photogrammetry and Remote Sensing ◽

10.1016/0924-2716(95)00003-8 ◽

1996 ◽

Vol 51 (1) ◽

pp. 39-48 ◽

Cited By ~ 4

Author(s):

Kamaruzaman Jusoff ◽

Giles D'Souza

Keyword(s):

Dipterocarp Forest ◽

Hill Dipterocarp Forest ◽

Forest Lands

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Measuring the Short-term Success of Hill Dipterocarp Forest Restoration: The Use of Organic Materials

Journal of Agricultural Science ◽

10.5539/jas.v5n1p230 ◽

2012 ◽

Vol 5 (1) ◽

Author(s):

Ika Heriansyah ◽

Hazandy Abdul Hamid ◽

Ahmad Ainudin Nuruddin ◽

Arifin Abdu ◽

Shamsudin Ibrahim

Keyword(s):

Forest Restoration ◽

Organic Materials ◽

Short Term ◽

Dipterocarp Forest ◽

Hill Dipterocarp Forest

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Size-related habitat use, aggregation patterns and abundance of anglerfish (Lophius budegassa) in the Mediterranean Sea determined by generalized additive modelling

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315403008440h ◽

2003 ◽

Vol 83 (5) ◽

pp. 1171-1178 ◽

Cited By ~ 22

Author(s):

Christos Maravelias ◽

Costas Papaconstantinou

Keyword(s):

Generalized Additive Models ◽

Aegean Sea ◽

Distribution Patterns ◽

Habitat Associations ◽

Additive Models ◽

Seasonal Effects ◽

Nursery Ground ◽

Size Category ◽

Aegean Area ◽

Eastern Aegean

Spatial distribution patterns of black anglerfish, Lophius budegassa were examined in relation to size category, bathymetry, locational covariates, and season. Data were collected during a 2-y period (1998–1999) of quasi-synoptic seasonal sampling using demersal trawl surveys in the Aegean Sea. Generalized additive models (GAMs) were used to test the hypotheses that there was size-related variation in species' habitat associations and that the study area might serve as a nursery ground for black anglerfish. The current results supported these hypotheses. Data are presented that reveal size-dependent aggregation patterns of black anglerfish and an important habitat utilization of the north-eastern Aegean area. The modelled anglerfish abundances showed a strongly non-linear dependence on the explanatory covariates. The different size-classes exhibited significant seasonal effects and preferences for specific regions and distinct water depths. The present results also suggested that 1-y-old fish and potential spawners appeared to concentrate in the vicinity of the same areas. Two main areas of juvenile aggregations were detected in the deeper water regions of the study area on a seabed of around 300 m depth; both emerged in the proximity of the locations of larger fish. The bathymetric distribution of intermediate size anglerfish followed an inverse trend, with fish captured mainly in shallower waters. Results indicated a preferential aggregation of 1-y-old L. budegassa in the study area that is hypothesized to influence the supply of recruits to distant regions of the Aegean Sea.

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Habitat utilization of the Sumatran rhinos (Dicerorhinus sumatrensis harrissoni) in Kutai Barat forest, East Kalimantan, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d190536 ◽

2018 ◽

Vol 19 (5) ◽

pp. 1842-1850 ◽

Cited By ~ 1

Author(s):

MUKHLISI MUKHLISI ◽

TRI SAYEKTI NINGSIH ◽

ULFAH KARMILA SARI ◽

YUYUN KURNIAWAN ◽

RIDWAN SETIAWAN ◽

...

Keyword(s):

Secondary Forest ◽

Natural Habitat ◽

Selection Index ◽

Habitat Utilization ◽

Index Formula ◽

Selection Function ◽

East Kalimantan ◽

Preferred Habitat ◽

High Threat ◽

Habitat Variables

Mukhlisi, Ningsih TS, Sari UK, Kurniawan Y, Setiawan R, Muslim A. 2018. Habitat utilization of the Sumatran rhinos (Dicerorhinus sumatrensis harrissoni) in Kutai Barat forest, East Kalimantan, Indonesia. Biodiversitas 19: 1842-1850. Sumatran rhino population in Kutai Barat forest faces a high threat of extinction. Conservation efforts can be developed more effectively and efficiently by understanding the condition of their natural habitat. This study aimed to analyze various factors influencing habitat utilization of the Sumatran rhino in Kalimantan, specifically in Kutai Barat forest. We used past survey data of rhino presence carried out by WWF from 2014 to 2016. GPS coordinates were recorded for all signs of rhinos, such as camera trap images, footprints, bites mark on food plant, dung piles, urine, scratch, twisting, and lying signs. Rhino occurrence GPS coordinates were plotted on a map of the Sumatran rhino's habitat distribution in Kutai Barat using a grid of 2 x 2 km2 size. Spatial analyses were run using ArcGIS 10.6. We used a habitat selection index formula to analyze habitat preference and biner logistic regression to develop Resources Selection Function (RSF). We found that the preferred habitat of the Sumatran rhino was in the secondary forest with medium and high vegetation densities. The most influential habitat variables on the presence of Sumatran rhinoceros in the Kutai Barat forest were the slope and distance from wallow. The Sumatran rhinoceros were more likely to be found in the sloping areas and the areas closer to the wallows.

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Distribution patterns and habitat associations of Sandelia bainsii ( T eleostei: A nabantidae), a highly threatened narrow‐range endemic freshwater fish

Journal of Fish Biology ◽

10.1111/jfb.14580 ◽

2020 ◽

Author(s):

Delsy S. Sifundza ◽

Albert Chakona ◽

Wilbert T. Kadye

Keyword(s):

Freshwater Fish ◽

Narrow Range ◽

Distribution Patterns ◽

Habitat Associations

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Cross-scale Correlations and the Design and Analysis of Avian Habitat Selection Studies

The Condor ◽

10.1093/condor/108.1.59 ◽

2006 ◽

Vol 108 (1) ◽

pp. 59-70 ◽

Cited By ~ 9

Author(s):

James Battin ◽

Joshua J. Lawler

Keyword(s):

Habitat Selection ◽

Multiple Scales ◽

Hierarchical Modeling ◽

Selection Process ◽

Spatial Scales ◽

Classification Tree ◽

Data Interpretation ◽

Habitat Associations ◽

Selection Decisions ◽

Habitat Variables

Abstract It has long been suggested that birds select habitat hierarchically, progressing from coarser to finer spatial scales. This hypothesis, in conjunction with the realization that many organisms likely respond to environmental patterns at multiple spatial scales, has led to a large number of avian habitat studies that have attempted to quantify habitat associations at multiple scales. Typically, multiscale habitat selection studies involve the assessment of habitat selection separately at two or more scales. Until recently, these studies have ignored the potential for cross-scale correlations: correlations among habitat variables across scales. If environmental patterns are correlated across the scales being analyzed, researchers using traditional analytical methods may reach erroneous conclusions about the presence or strength of habitat associations at a given scale. We discuss the ways in which cross-scale correlations manifest themselves in two types of habitat selection studies: (1) “constrained” designs that assume a hierarchical ordering of habitat selection decisions, and (2) “unconstrained” designs, which do not assume such a selection process. We demonstrate approaches for quantifying and modeling cross-scale correlations, including a simulation model, a variance decomposition technique, and a hierarchical modeling approach based on classification tree analysis. We conclude that cross-scale correlations have the potential to affect data interpretation in all types of habitat selection studies and that, even with careful attention to experimental design and the application of newly developed statistical techniques, it is likely their effects cannot be eliminated.

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