scholarly journals Inventory of insects in the El Ghrous's palm grove (Biskra; Algeria)

2022 ◽  
Vol 7 (1) ◽  
pp. 85-94
Author(s):  
H Zakaria ◽  
S Benhissen ◽  
W Habbachi ◽  
F Masna ◽  
AY Asloum ◽  
...  
Keyword(s):  
Species Richness ◽  
Insect Species

The diversity and species richness of insects were studied at the palm grove of El Ghrous. The insects were collected using two types of traps: Barber and Aerial. Forty-four insect species were inventoried. This inventory shows a predominance of Order Coleoptera with 6 families, 13 species and 241 individuals, followed by Hemiptera with 5 families, 7 species and 111 individuals, and Orthoptera with 2 families, 7 species and 54 individuals. J. Biodivers. Conserv. Bioresour. Manag. 2021, 7(1): 85-94

scholarly journals Superhost Plants Alter the Structure of Plant–Galling Insect Networks in Neotropical Savannas

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 369 ◽  
Author(s):  
Araújo ◽  
Moreira ◽  
Falcão ◽  
Borges ◽  
Fagundes ◽  
...  
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Plant Diversity ◽  
Host Plants ◽  
Plant Species Richness ◽  
Variable Number ◽  
Insect Species ◽  
Species Number ◽  
Neotropical Savannas ◽  
Galling Insects

Host plants may harbor a variable number of galling insect species, with some species being able to harbor a high diversity of these insects, being therefore called superhost plants. In the present study, we tested the hypothesis that the occurrence of superhost plant species of genus Qualea (Vochysiaceae) affects the structure of plant–galling insect ecological networks in Brazilian Cerrado. We sampled a total of 1882 plants grouped in 131 species and 43 families, of which 64 species and 31 families of host plants hosted 112 galling insect species. Our results showed that occurrence of superhosts of genus Qualea increased the linkage density of plant species, number of observed interactions, and the size of plant–galling insect networks and negatively affected the network connectance (but had no effect on the residual connectance). Although the occurrence of Qualea species did not affect the plant species richness, these superhosts increased the species richness and the number of interactions of galling insects. Our study represents a step forward in relation to previous studies that investigated the effects of plant diversity on the plant–insect networks, showing that few superhost plant species alter the structure of plant–herbivore networks, even without having a significant effect on plant diversity.

Gall-Inducing Insect Species Richness as Indicators of Forest Age and Health

2010 ◽  
Vol 39 (4) ◽  
pp. 1134-1140 ◽  
Author(s):  
G. Wilson Fernandes ◽  
Emmanuel D. Almada ◽  
Marco Antonio A. Carneiro
Keyword(s):  
Species Richness ◽  
Insect Species ◽  
Forest Age ◽  
Insect Species Richness

Island biogeography of insect conservation in urban green spaces

2017 ◽  
Vol 45 (1) ◽  
pp. 1-10 ◽  
Author(s):  
SIMONE FATTORINI ◽  
CRISTINA MANTONI ◽  
LIVIA DE SIMONI ◽  
DIANA M.P. GALASSI
Keyword(s):  
Species Richness ◽  
Island Biogeography ◽  
Extinction Risk ◽  
Strong Support ◽  
Insect Conservation ◽  
Green Spaces ◽  
Insect Species ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Insect Species Richness

SUMMARYBecause of their isolation, biotic communities of urban green spaces are expected to be similar to those of oceanic islands. This should be particularly true for insects, which represent an important component of urban faunas. The equilibrium theory of island biogeography (ETIB) allows for the formulation of some hypotheses regarding the influence of the geographical characteristics of green spaces on insect species richness and extinction risk. Based on island biogeography principles, we present eight predictions on how green space characteristics should influence insect species richness and loss. We analysed the current literature in order to determine which predictions were supported and which were not. We found that many studies gave outcomes that support ETIB predictions about the effects of area and isolation of green spaces; we found no strong support for predictions about shape and extent of native habitat in the literature that we reviewed. Most of the available studies dealt with patterns in species richness, whereas insect species loss has been rarely investigated. Future developments in the application of island biogeography principles to urban insect conservation should address temporal trends in species persistence and the analysis of species co-occurrence and nestedness.

scholarly journals Correlation between some landscape metrics and insect species richness in coffee agroforests in Pangalengan Subdistrict, Bandung District, West Java, Indonesia

2019 ◽  
Vol 20 (10) ◽  
Author(s):  
SUSANTI WITHANINGSIH ◽  
Parikesit ◽  
MUHAMMAD BURHANUDDIN RABBANY
Keyword(s):  
Species Richness ◽  
Negative Correlation ◽  
Landscape Metrics ◽  
Landscape Heterogeneity ◽  
Insect Species ◽  
Insect Community ◽  
West Java ◽  
Strong Negative Correlation ◽  
Landscape Characteristics ◽  
Insect Species Richness

Abstract. Withaningsih S, Parikesit, Rabbany MB. 2019. Correlation between some landscape metrics and insect species richness in coffee agroforests in Pangalengan Subdistrict, Bandung District, West Java, Indonesia. Biodiversitas 20: 3075-3085. The insect community provides valuable ecosystem services and can help maintain ecosystem integrity in human-altered landscapes such as coffee agroforests. The aim of this study was to assess the landscape characteristics of coffee agroforests in the Pangalengan Subdistrict and analyze how those characteristics influence the insect communities. Landscape metric approaches were examined to quantify landscape characteristics and the results analyzed using correspondence analysis to determine variation among samples, and simple linear regression testing was used to determine the influence of those landscape characteristics on the insect community. Seventeen sample locations varied in characteristics based on the proportion of the land cover classes, and landscape characteristics determined the number of insect species. The number of insect species showed strong negative correlation with landscape heterogeneity (R2=0.456) and number of patches (R2=0.514) and a weak positive response to the proportion of natural forest remaining (R2=0.150). Number of insect species showed a strong negative correlation to landscape heterogeneity, number of patches, and number of natural forest remaining simultaneously (R2=0.514).

Assessing Insect Species-richness at a Single Site

1990 ◽  
Vol 17 (4) ◽  
pp. 362-364 ◽  
Author(s):  
Denis F. Owen ◽  
Jennifer Owen
Keyword(s):  
Species Richness ◽  
Single Site ◽  
Insect Species ◽  
Insect Species Richness
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