SPECIES RICHNESS AND ABUNDANCE OF LOW-TRUNK HERB EPIPHYTES IN RELATION TO HOST TREE SIZE AND BARK TYPE, EASTERN AMAZONIA

ABSTRACTThe composition and structure of the low-trunk epiphytic herb assembly as well as its vertical distribution were studied. DBH of host tree and bark type influence species richness and abundance in a nonlooded lowland tropical rainforest in Eastern Amazonia (1º57’36"S 51º36’55"W). A total of 37 epiphytic herb species were identified, among which 60% were Araceae. Species richness and abundance of epiphytic herbs showed tendency of positive correlation with host tree size and no relationships with bark type. Low positive correlation may be a by-product of the predominance of trees with smaller diameter in our sample rather than a reflection of neutral relationship. The absence of relationships with bark type may be partially explained by the large number of secondary, generalist, hemi-epiphytes and also may reflect the absence of suitable substrate in trees with smaller diameter.

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Diversity and host tree preferences of vascular epiphytes and vines in a temperate rainforest in southern Chile

Australian Journal of Botany ◽

10.1071/bt02070 ◽

2003 ◽

Vol 51 (4) ◽

pp. 381 ◽

Cited By ~ 49

Author(s):

Alejandro A. Muñoz ◽

Paulina Chacón ◽

Fernanda Pérez ◽

Elizabeth S. Barnert ◽

Juan J. Armesto

Keyword(s):

Species Richness ◽

Tree Species ◽

Floristic Composition ◽

Abundant Species ◽

Tree Size ◽

Host Tree ◽

Southern Chile ◽

Frequency Distributions ◽

Trunk Diameter ◽

Vascular Epiphytes

Vines and epiphytes contribute importantly to the biodiversity of temperate rainforests of southern South America. However, compared with their tropical counterparts, these functional groups have received less attention. We evaluated diversity, floristic composition and relative abundance of vascular epiphytes and vines within a humid temperate forest in northern Chiloé Island, southern Chile. We assessed whether epiphyte and vine species exhibit preferences among host tree species and tested whether species richness on tree hosts differs from that expected by chance, by comparing observed frequencies of occurrence (FO) and species richness with randomly simulated frequency distributions generated under the assumption of no epiphyte preferences. Finally, we tested for associations of epiphyte and vine species with host tree size (trunk diameter at breast height). Eleven species of ferns and nine angiosperms (seven vines, one epiphytic angiosperm and one shrub) were recorded growing epiphytically in a sample of 499 trees. The most abundant species were three vines, Luzuriaga polyphylla (Hook.) Macbr., Griselinia racemosa (Phil.) Taub. and Mitraria coccinea Cav., and five species of filmy ferns (Hymenophyllaceae). Most epiphytes and vines (65%) showed preference for one or two tree species, with seven species being overrepresented on Podocarpus nubigena Lindl. hosts and 10 underrepresented on Drimys winteri J.R. et G.Forster. Epiphyte and vine species richness was significantly lower than expected by chance on D. winteri and higher than expected on Nothofagus nitida (Phil.) Krasser. Three epiphytic ferns showed preferences for large-sized trees, while frequency of occurrence of three common vines was independent of host tree size.

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Composition and structure of Gastropoda in the Lavandula dentata L. (Labiatae) stations in the Ghazaouet region (Tlemcen, North-West Algeria)

Advancement in Medicinal Plant Research ◽

10.30918/ampr.91.19.027 ◽

2021 ◽

Vol 9 (1) ◽

pp. 22-29

Author(s):

Amina DAMERDJI ◽

◽

Keyword(s):

Species Richness ◽

Vertical Distribution ◽

Coastal Region ◽

Relative Importance ◽

North West ◽

Terrestrial Gastropods ◽

Composition And Structure ◽

West Algeria

An approach to the diversity of malacofauna associated with toothed lavender was carried out in three stations belonging to the coastal region of Ghazaouet (Wilaya de Tlemcen) from January to July 2013. The specific richness of gastropods is 14 species. Four species are accessories and ten others are accidental. The relative importance of snails varies by station and by month and season. Gastropods preferring certain humidity are easily collected in winter and spring. In April, the species richness is relatively important (6 species) in the 1st and 2nd stations respectively. Milax gagates has a frequency of 78.57% in the first station (Sidi-Aissa) and 57.14% in the 2nd station (Sidi - Amar). Helicella pyramidata has a frequency of 35.71% in station 3 (Bab Khroufa). Similarly, this Helicellinae has a density equal to 0.50 in the same station. Keywords: Lavandula dentata, terrestrial gastropods, diversity, bioecology, vertical distribution, Ghazaouet region (Tlemcen).

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Species richness, abundance and vertical distribution of Copepods in Banda Sea, Indonesia

E3S Web of Conferences ◽

10.1051/e3sconf/20184703004 ◽

2018 ◽

Vol 47 ◽

pp. 03004

Author(s):

Hanung Agus Mulyadi ◽

Abdul Basit ◽

Idha Yulia Ikhsani ◽

Malik Sudin Abdul

Keyword(s):

Species Richness ◽

Surface Water ◽

Vertical Distribution ◽

Total Abundance ◽

Species Richness And Abundance

The aims of this research were to investigate the species richness and abundance of Copepods. Copepods were sampled using rosette sampler (surface, 25 m and 75 m) on November 21st – 30th, 2013, from the Banda Sea. A total of 21 taxa of Copepods belonging to three orders were identified. Calanoid was identified as the most richness order, followed by Cyclopoid and Harpacticoid. The highest value of total abundance in the surface water is 121 ind/6L, in the 25 m of depth is 221 ind/6 L, and in the 75 m of depth is 96 ind/6L. Acrocalanus longicornis is the most abundant taxa of Copepods, followed by Acartia bispinosa, and Subeucalanus mucronatus. The most predominant taxa of Acartia bispinosa, and Subeucalanus mucronatus showed a remarkable peak at 25 m layers.

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The vertical distribution of epiphytic orchids on Schima wallichii trees in a montane forest in West Java, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d210136 ◽

2019 ◽

Vol 21 (1) ◽

Author(s):

Indra Fardhani ◽

Takeshi Torimaru ◽

Hiromitsu Kisanuki

Keyword(s):

Species Richness ◽

Vertical Distribution ◽

Montane Forest ◽

Host Tree ◽

West Java ◽

Epiphytic Orchids ◽

Epiphytic Orchid ◽

Significant Difference ◽

Schima Wallichii ◽

The Vertical Distribution

Abstract. Fardhani I, Torimaru T, Kisanuki H. 2020. The vertical distribution of epiphytic orchids on Schima wallichii trees in a montane forest in West Java, Indonesia. Biodiversitas 21: 290-298. Schima wallichii Choisy. is a mostly montane species native to the island of Java; it grows on degraded land areas and is widely used for forest restoration. We studied the vertical distribution of epiphytic orchids on these trees in montane forest on Mt. Sanggara, West Java, Indonesia. To this end, 40 S. wallichii trees with diameter at breast height (DBH) > 20 cm were chosen haphazardly and their epiphytic orchids were identified The diameter and height of each host tree were measured. The position of each epiphytic orchid on each host tree was allocated to one of five zones using Johansson’s method. In total, 39 epiphytic orchid species were identified on 40 host trees at the study site. There was no significant difference in orchid abundance or species richness between crown zones. However, there were significant differences in orchid abundance and species richness between trunks and crowns. Host tree size (DBH) and the number of branches were positively correlated with orchid abundance and species richness. The numbers of orchids and other epiphytic plants were positively correlated in the mid-crown and outer-crown. S. wallichii trees are essential for the epiphytic orchid community because they produce many branches that are suitable for colonization.

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Spatial Distribution of Lichens in Metrosideros excelsa in Northern New Zealand Urban Forests

Diversity ◽

10.3390/d13040170 ◽

2021 ◽

Vol 13 (4) ◽

pp. 170

Author(s):

Gladys N. Benitez ◽

Glenn D. Aguilar ◽

Dan Blanchon

Keyword(s):

Spatial Distribution ◽

Species Richness ◽

New Zealand ◽

Lichen Species ◽

Positive Correlation ◽

Breast Height ◽

Lichen Community ◽

The North ◽

The City ◽

Lichen Flora

The spatial distribution of corticolous lichens on the iconic New Zealand pōhutukawa (Metrosideros excelsa) tree was investigated from a survey of urban parks and forests across the city of Auckland in the North Island of New Zealand. Lichens were identified from ten randomly selected trees at 20 sampling sites, with 10 sites classified as coastal and another 10 as inland sites. Lichen data were correlated with distance from sea, distance from major roads, distance from native forests, mean tree DBH (diameter at breast height) and the seven-year average of measured NO2 over the area. A total of 33 lichen species were found with coastal sites harboring significantly higher average lichen species per tree as well as higher site species richness. We found mild hotspots in two sites for average lichen species per tree and another two separate sites for species richness, with all hotspots at the coast. A positive correlation between lichen species richness and DBH was found. Sites in coastal locations were more similar to each other in terms of lichen community composition than they were to adjacent inland sites and some species were only found at coastal sites. The average number of lichen species per tree was negatively correlated with distance from the coast, suggesting that the characteristic lichen flora found on pōhutukawa may be reliant on coastal microclimates. There were no correlations with distance from major roads, and a slight positive correlation between NO2 levels and average lichen species per tree.

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Rocket launching activities are associated with reduced insect species richness and abundance in two types of tropical plantations around the Wenchang Satellite Launch Center, southern China

Ecological Indicators ◽

10.1016/j.ecolind.2021.107751 ◽

2021 ◽

Vol 127 ◽

pp. 107751

Author(s):

Yang Xue ◽

Robert John ◽

Xiang Liu ◽

Xiaoyan Wang ◽

Shaofeng Su ◽

...

Keyword(s):

Species Richness ◽

Southern China ◽

Insect Species ◽

Tropical Plantations ◽

Species Richness And Abundance ◽

Insect Species Richness

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Species richness and abundance of defoliating Lepidoptera associated with Eucalyptus grandis in Brazil and their response to plant age

Austral Ecology ◽

10.1046/j.1442-9993.2001.01126.x ◽

2001 ◽

Vol 26 (6) ◽

pp. 582-589 ◽

Cited By ~ 25

Author(s):

J. C. Zanuncio ◽

R. N. C. Guedes ◽

T. V. Zanuncio ◽

A. S. Fabres

Keyword(s):

Species Richness ◽

Eucalyptus Grandis ◽

Plant Age ◽

Species Richness And Abundance

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Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

Brazilian Journal of Biology ◽

10.1590/s1519-69842010000300011 ◽

2010 ◽

Vol 70 (3) ◽

pp. 551-557 ◽

Cited By ~ 11

Author(s):

AMA. Medeiros ◽

JEL. Barbosa ◽

PR. Medeiros ◽

RM. Rocha ◽

LF. Silva

Keyword(s):

Species Richness ◽

Rainy Season ◽

Salinity Gradient ◽

River Estuary ◽

Positive Influence ◽

Freshwater Discharge ◽

The Other ◽

Semiarid Region ◽

Inverse Estuary ◽

Species Richness And Abundance

The present study aimed at evaluating differences in rotifer distribution in three estuarine zones in an inverse estuary located in the Semiarid Region of Brazil. Zones were chosen based on their proximity to the ocean and river border as a means of reflecting a horizontal salinity gradient. High freshwater discharge during the rainy season was the major determinant of rotifer composition. On the other hand, due to higher salinity values during the dry season, very low values of species richness and abundance were observed in all zones. Therefore, the study highlights the constraints of salinity and the positive influence of seasonality and river proximity on rotifer species in a semiarid estuarine environment.

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