scholarly journals The improvement of molluscs population: as a parameter of success of local scale mangrove conservation on the south coast of Lombok

2021 ◽  
Vol 913 (1) ◽  
pp. 012047
Author(s):  
Agil Al Idrus ◽  
Baiq Nunung Hidayati ◽  
Erna Ajizah ◽  
Wahyu Bintang Ilahi ◽  
Abdul Syukur
Keyword(s):  
Species Richness ◽  
Research Method ◽  
Wealth Index ◽  
Local Scale ◽  
Marine Biota ◽  
Ecological Data ◽  
Observation Methods ◽  
Mollusc Species ◽  
Main Factor ◽  
Mangrove Conservation

Abstract Mangroves are known by local people as mangrove plants that contribute to the sustainability of the diversity of marine biota species, such as molluscs. At the study site, mangrove conservation activities have been carried out by the community and are thought to influence the development of molluscs populations significantly. The study aims to assess the results of local-scale mangrove conservation with the development of molluscs populations. The research method uses observation methods with transect methods for ecological data. Ecological data analysis uses the index of evenness, richness, and diversity. The analysis found 27 species of molluscs consisting of 21 species of gastropods and 6 species of bivalves. The highest evenness and diversity was found at 2.4 in Gerupuk, while the highest wealth index was 16.8 in Poton Bakau. Furthermore, the molluscs species found consists of two classes, namely bivalves and gastropods. The main factor in determining species richness, is more determined by the condition of the substrate. In this case, the presence of mangroves is very important in creating the substrate conditions needed by the diversity of mollusc species. Therefore, mangrove conservation is very important for the protection and preservation and diversity of molluscs species. Information on the ecological potential of mangroves on fauna diversity, especially molluscs, can be a major source of ecosystem-based marine resource management, such as at the study site.

scholarly journals Distribution Patterns and Floristic Analysis of the Colymbada Tauromenitana (Guss.) Holub Populations in Sicily (Italy)

2014 ◽  
Vol 73 (2) ◽  
pp. 385-410 ◽  
Author(s):  
Saverio Sciandrello ◽  
Sonia D’agostino
Keyword(s):  
Species Richness ◽  
Floristic Composition ◽  
Distribution Patterns ◽  
Vegetation Types ◽  
Ecological Data ◽  
Risk Status ◽  
The Third ◽  
Floristic Analysis ◽  
Components Analysis ◽  
Main Factor

AbstractColymbada tauromenitana(Guss.) Holub (Asteraceae) is a rare paleoendem-ic, chasmophyte species, occurring on calcareous cliffs in the eastern part of Sicily (Italy). The aim of this work is to analyze the structure and floristic composition of theC. tauromenitanacommunity, in order to characterize the diversity of populations in relation to different ecological data. In all, 61 plots were examined. For each plot, the floristic composition and the cover of the species were determined using the standard relevé method. Three vegetation types emerged from canonical components analysis (CCA), correlated to a gradient of environmental conditions ranging from the coast to inland areas. The first group withLomelosia creticaandDianthus rupicolasubsp.rupicolawas correlated to thermo-xerophilous conditions (lower thermo-Mediterranean belt), the second group withSilene fruticosaandColymbada tauromenitanawas linked to thermophilous conditions (upper thermo-Mediterranean belt) and the third withDianthus siculusandOdontites boc-coneiwas correlated to mesophilous conditions (meso-Mediterranean belt). Altitude is the main factor influencing both species richness and floristic composition. The density ofC. tauromenitanais influenced mainly by rainfall. Finally, we propose a new risk status for this rare species.

scholarly journals PENGEMBANGAN MODUL PENDIDIKAN KONSERVASI MANGROVE BERBASIS ECOLOGICAL CITIZENSHIP UNTUK MASYARAKAT PESISIR DI SERANG - BANTEN

2019 ◽  
Vol 20 (02) ◽  
pp. 13-24
Author(s):  
Novi Utami Rosyid
Keyword(s):  
Environmental Education ◽  
Coastal Area ◽  
Research Method ◽  
Coastal Region ◽  
Environmentally Friendly ◽  
Coastal Communities ◽  
The Public ◽  
Ecological Citizenship ◽  
Main Factor ◽  
Mangrove Conservation

The Serang - Banten coastal community was affected by various environmental, social and economicproblems due to abrasion. The main factor causing abrasion was the degradation of mangroveecosystems in the Serang Coastal region which results from various activities of the Serang coastalcommunity that are not environmentally friendly. Environmental education is the best solution tosolve environmental problems. One method that can be practiced in the environmental education ofthe Coastal Serang community is the ecological citizenship method. This method requires learningresources to facilitate its application in effectively educating the public through learning modules.The aim of this research is to develop an ecological citizenship-based mangrove conservationmodule for coastal communities in Serang - Banten. The research method was the 3D modeldevelopment method (define, design, develop) which was a modification of the 4D model bySugiyono, et.al (2015). The results of the study are in the form of an ecological citizenship mangroveconservation module that can be used by ministries, institutions and the community as a source ofenvironmental education learning for mangrove conservation in the coastal area of Serang - Banten.

scholarly journals The Perceptions of Local Community's About Diversity of Mangrove Ecological Potential for Ecotourism Development in the South Coast of Lombok Island, Indonesia

2021 ◽  
Vol 21 (2) ◽  
pp. 480
Author(s):  
Lalu Raftha Patech ◽  
Kumala Ratna Dewi ◽  
Zulhalifah Zulhalifah ◽  
Abdul Syukur ◽  
Jamaluddin Jamaluddin
Keyword(s):  
Diversity Index ◽  
Mangrove Ecosystem ◽  
Marine Biota ◽  
Ecological Data ◽  
Mangrove Species ◽  
Association Index ◽  
Mangrove Ecosystems ◽  
Bird Watching ◽  
By Products ◽  
Mangrove Conservation

The utilization of the coastal environment is still dominated by-products and has not yet switched to ecosystem service products, such as the use of mangrove ecosystems as ecotourism. This study aims to assess the local community's perception of the potential diversity that becomes an object for the community's economy. The research method uses surveys, observations, and interviews for social data, while the ecological data use transect and quadratic methods. Furthermore, data analysis used descriptive statistics. In addition, ecological data were analyzed using density (Ki), relative frequency (FR), diversity (H') of mangroves, and ecological indexes (Diversity (H'), Evenness (E), Dominance (D)). The results of the study found six mangrove species, ten echinoderm species, and thirteen bivalves. The highest diversity index (H') was in Poton Bako 1.80 and the Evenness index ranged from 0.80 – 0.98 with a stable category. Biota relative dominance the association index of echinoderms is high 0.79–0.11. Meanwhile, the bivalves Dominance index of 0.03-0.11 was low. In addition, local community's perception of mangrove conservation for ecotourism, 63% of the community stated, 7% is not possible and 30% is not. The feasible value of mangrove development is 62%, 17% is not feasible and 21% does not know. The priority developed by Eduwisata is 48%, Bird Watching is 20% and Tracking is 32%. The conclusion is that the choice of using mangrove ecosystem services can be developed as a policy in overcoming economic threats and the vulnerability of marine biota as well as solutions for local communities.

scholarly journals Molluscan Diversity Influenced by Mangrove Habitat in the Khors of Qatar

Wetlands ◽  
2021 ◽  
Vol 41 (4) ◽  
Author(s):  
Jassim A. Al-Khayat ◽  
P. Vethamony ◽  
Mandar Nanajkar
Keyword(s):  
Species Richness ◽  
Arabian Gulf ◽  
Species Number ◽  
Mangrove Habitat ◽  
Developing Region ◽  
Tidal Area ◽  
Mollusc Species ◽  
Molluscan Diversity ◽  
Molluscan Species ◽  
Mangrove Conservation

AbstractThe Exclusive Economic Zone (EEZ) of Qatar is a rapidly developing region within the Arabian Gulf, where monitoring of changes in benthic biodiversity and its functioning is needed. The influence of mangroves and seasonality on the nearshore subtidal molluscan diversity at three distinct khors (nearshore tidal bays) – natural mangroves (Al Dhakhira), planted mangroves (Al Mafyar) and no-mangroves (Dawhat Zekreet) – are investigated in this study. This study concludes that even the sub-tidal area is influenced by mangroves, and mangroves increase the diversity of molluscs compared to the site that lacks mangroves. The maximum salinity (59.8 psu) was observed at Dawhat Zekreet during summer, and the minimum (41.44 psu) at Al Dhakhira in winter. Chlorophyll a level was low for all the khors, and rarely exceeded 1 μg/L, depicting oligotrophic waters. Al Dhakhira demonstrated the highest molluscan species richness (32), and shared 28 species in common with Al Mafyar. Dawhat Zekreet had the fewest mollusc species number and no mangroves. When cumulative diversity over all seasons was considered, Dawhat Zekreet exhibited the lowest species richness; Al Dhakhira, the highest. Some mangrove regions have been already utilized for developmental activities, and Qatar needs to continue the program of mangrove conservation as a vital habitat for molluscs.

scholarly journals Arthropod community structure in pastures of an island archipelago (Azores): looking for local–regional species richness patterns at fine-scales

2004 ◽  
Vol 94 (2) ◽  
pp. 111-121 ◽  
Author(s):  
P.A.V. Borges ◽  
V.K. Brown
Keyword(s):  
Species Richness ◽  
Regional Scale ◽  
Local Scale ◽  
Local Species Richness ◽  
Β Diversity ◽  
Arthropod Species ◽  
Α Diversity ◽  
Local Species ◽  
Richness Patterns

AbstractThe arthropod species richness of pastures in three Azorean islands was used to examine the relationship between local and regional species richness over two years. Two groups of arthropods, spiders and sucking insects, representing two functionally different but common groups of pasture invertebrates were investigated. The local–regional species richness relationship was assessed over relatively fine scales: quadrats (= local scale) and within pastures (= regional scale). Mean plot species richness was used as a measure of local species richness (= α diversity) and regional species richness was estimated at the pasture level (= γ diversity) with the ‘first-order-Jackknife’ estimator. Three related issues were addressed: (i) the role of estimated regional species richness and variables operating at the local scale (vegetation structure and diversity) in determining local species richness; (ii) quantification of the relative contributions of α and β diversity to regional diversity using additive partitioning; and (iii) the occurrence of consistent patterns in different years by analysing independently between-year data. Species assemblages of spiders were saturated at the local scale (similar local species richness and increasing β-diversity in richer regions) and were more dependent on vegetational structure than regional species richness. Sucking insect herbivores, by contrast, exhibited a linear relationship between local and regional species richness, consistent with the proportional sampling model. The patterns were consistent between years. These results imply that for spiders local processes are important, with assemblages in a particular patch being constrained by habitat structure. In contrast, for sucking insects, local processes may be insignificant in structuring communities.

scholarly journals Testing biodiversity theory using species richness of reef-building corals across a depth gradient

2019 ◽  
Vol 15 (10) ◽  
pp. 20190493 ◽  
Author(s):  
T. Edward Roberts ◽  
Sally A. Keith ◽  
Carsten Rahbek ◽  
Tom C. L. Bridge ◽  
M. Julian Caley ◽  
...  
Keyword(s):  
Species Richness ◽  
Large Scale ◽  
Coral Species ◽  
Environmental Gradients ◽  
Abiotic Factors ◽  
Empirical Support ◽  
Null Model ◽  
Local Scale ◽  
Small Scale ◽  
Energy Availability

Natural environmental gradients encompass systematic variation in abiotic factors that can be exploited to test competing explanations of biodiversity patterns. The species–energy (SE) hypothesis attempts to explain species richness gradients as a function of energy availability. However, limited empirical support for SE is often attributed to idiosyncratic, local-scale processes distorting the underlying SE relationship. Meanwhile, studies are also often confounded by factors such as sampling biases, dispersal boundaries and unclear definitions of energy availability. Here, we used spatially structured observations of 8460 colonies of photo-symbiotic reef-building corals and a null-model to test whether energy can explain observed coral species richness over depth. Species richness was left-skewed, hump-shaped and unrelated to energy availability. While local-scale processes were evident, their influence on species richness was insufficient to reconcile observations with model predictions. Therefore, energy availability, either in isolation or in combination with local deterministic processes, was unable to explain coral species richness across depth. Our results demonstrate that local-scale processes do not necessarily explain deviations in species richness from theoretical models, and that the use of idiosyncratic small-scale factors to explain large-scale ecological patterns requires the utmost caution.

scholarly journals A global model of island species–area relationships

2019 ◽  
Vol 116 (25) ◽  
pp. 12337-12342 ◽  
Author(s):  
Thomas J. Matthews ◽  
François Rigal ◽  
Kostas A. Triantis ◽  
Robert J. Whittaker
Keyword(s):  
Species Richness ◽  
Structural Equation ◽  
Negative Relationship ◽  
Equation Model ◽  
Local Scale ◽  
Ecological Process ◽  
Global Pattern ◽  
Island Species ◽  
Species Area ◽  
Globally Distributed

The increase in species richness with island area (ISAR) is a well-established global pattern, commonly described by the power model, the parameters of which are hypothesized to vary with system isolation and to be indicative of ecological process regimes. We tested a structural equation model of ISAR parameter variation as a function of taxon, isolation, and archipelago configuration, using a globally distributed dataset of 151 ISARs encompassing a range of taxa and archipelago types. The resulting models revealed a negative relationship between ISAR intercept and slope as a function of archipelago species richness, in turn shaped by taxon differences and by the amount and disposition of archipelago area. These results suggest that local-scale (intra-archipelago) processes have a substantial role in determining ISAR form, obscuring the diversity patterns predicted by island theory as a function of archipelago isolation. These findings have implications for the use and interpretation of ISARs as a tool within biogeography, ecology, and conservation.

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