scholarly journals Seed plant features, distribution patterns, diversity hotspots, and conservation gaps in Xinjiang, China

2018 ◽  
Vol 27 ◽  
pp. 1-15
Author(s):  
Jihong Huang ◽  
Canran Liu ◽  
Zhongjun Guo ◽  
Keping Ma ◽  
Runguo Zang ◽  
...  
Keyword(s):  
Plant Diversity ◽  
Phylogenetic Diversity ◽  
Nature Reserve ◽  
Distribution Patterns ◽  
Diversity Indices ◽  
Nature Reserves ◽  
Seed Plant ◽  
Altai Mountains ◽  
Mountainous Areas ◽  
Network Function

The flora in Xinjiang is unique. Decisions about biodiversity conservation and management based on seed plant diversity hotspots and conservation gaps in Xinjiang are essential to maintain this unique flora. Based on a species distribution dataset of seed plants, we measured seed plant diversity using species richness and phylogenetic diversity indices. Five percent of Xinjiang’s total land area with the highest biodiversity was used to identify hotspots for each index. In total, eight hotspots were identified. Most hotspots were located in mountainous areas, mainly in the Tianshan Mountains and Altai Mountains. Furthermore, we detected conservation gaps for Xinjiang’s seed flora hotspots by overlaying nature reserve maps on to maps of identified hotspots and we designated priority conservation gaps for hotspots by overlaying global biodiversity hotspot maps on to hotspot conservation gaps maps. Most of Xinjiang’s seed plant hotspots are poorly protected; only 10.45% of these hotspots were covered by nature reserves. We suggest that it is essential to promote network function of nature reserves within these hotspots in Xinjiang to conserve this unique flora.

scholarly journals Anthropogenic factors are stronger drivers of patterns of endemic plant diversity on Hainan Island of China than natural environmental factors

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257575
Author(s):  
Zhi-Xin Zhu ◽  
Mir Muhammad Nizamani ◽  
A. J. Harris ◽  
Hua-Feng Wang
Keyword(s):  
Environmental Factors ◽  
Plant Diversity ◽  
Phylogenetic Diversity ◽  
Linear Models ◽  
Driving Forces ◽  
Hainan Island ◽  
Diversity Indices ◽  
Anthropogenic Factors ◽  
Phylogenetic Distance ◽  
Endemic Plant

The roles of natural and anthropogenic factors in contributing to the organization of biodiversity at large and small scales have long been challenging to disentangle, and doing so has never been attempted for the island province of Hainan in China based on patterns of taxonomic and phylogenetic diversity. Therefore, in this study, we evaluated the taxonomic and phylogenetic diversity of endemic plants on the island as a function of anthropogenic and natural variables based on non-metric multi-dimensional scaling (NMDS) ordination and generated generalized linear models (GLMs). We found that the highest phylogenetic diversity (1006) and the lowest mean phylogenetic distance (515.5) was in the provincial capital, Haikou. The NMDS analyses indicated that taxonomic diversity was significantly correlated with industrial revenue (p = 0.006) and population (p = 0.004). Furthermore, most phylogenetic diversity indices were strongly correlated with population and agricultural revenue, while the sampled natural environmental variables were not significantly correlated with plant diversity indices. These findings indicate that anthropogenic factors are the main present-day driving forces of plant diversity in Hainan, though we did detect a significant latitudinal diversity gradient of richness that likely reflects the historical roles of natural environmental factors in the organization of biodiversity on the island. Overall, our results are alarming for biodiversity of the island and indicate that conservation and sustainable use of endemic plant species must be made a critical priority.

The Existence of Geothermal Energy in Communication Perspective and Sustainable Environment in Indonesia

2019 ◽  
Vol 4 (3) ◽  
pp. 43-52
Author(s):  
Indriyati Kamil ◽  
Oekan S Abdoellah ◽  
Herlina Agustin ◽  
Iriana Bakti
Keyword(s):  
Environmental Sustainability ◽  
Geothermal Energy ◽  
Nature Reserve ◽  
Nature Reserves ◽  
Communication Model ◽  
Conservation Areas ◽  
Conservation Area ◽  
Environmentally Sustainable ◽  
Communication Models ◽  
The Government

This article highlights the dynamics of geothermal energy in the Kamojang nature reserve in Indonesia. A nature reserve is a conservation area that must be protected and preserved, because it has unique flora and fauna, and rare ecosystems whose existence is threatened with extinction. After going through a long study process by an integrated team, the government finally made a policy to change the function of the nature reserve into a Nature Tourism Park. Changes in policy changes to the function of nature reserves cause pros and cons in the community, and cause conflicts between government and environmental activists. The purpose of this study is to identify the factors that cause changes in the function of nature reserves into natural tourism parks in the Kamojang conservation area of Indonesia, as well as to identify appropriate communication models in the management of geothermal energy through communication and environmentally sustainable approaches. Research findings show that the factors that cause changes in the function of nature reserves into tourist parks include; the interests of geothermal energy to meet national energy needs and electricity infrastructure, accommodate the needs of surrounding communities that utilize water resources in conservation areas, and restore ecosystems. The communication model for geothermal energy management that we propose at the same time is also a novelty namely; ecopopulism approach, negotiation approach, collaboration, and equating meaning and orientation to environmental sustainability. Type of Paper: Empirical Keywords: Geothermal Energy, Nature Reserves, Conservation Policies, Communication Models and Sustainable Development.

scholarly journals Vegetation of the Witbank Nature Reserve and its importance for conservation of threatened Rocky Highveld Grassland

Koedoe ◽  
1997 ◽  
Vol 40 (2) ◽  
Author(s):  
C.M. Smit ◽  
G.J. Bredenkamp ◽  
N. Van Rooyen ◽  
A.E. Van Wyk ◽  
J.M. Combrinck
Keyword(s):  
Soil Moisture ◽  
Plant Communities ◽  
Nature Reserve ◽  
Soil Depth ◽  
Floristic Composition ◽  
Diversity Indices ◽  
Moisture Gradient ◽  
Negative Effects ◽  
Soil Moisture Gradient ◽  
Great Escarpment

A vegetation survey of the Witbank Nature Reserve, comprising 847 hectares, was conducted. Phytosociological data were used to identify plant communities, as well as to determine alpha and beta diversities. Eleven plant communities were recognised, two of these are subdivided into sub- communities, resulting in 14 vegetation units. These communities represent four main vegetation types, namely grassland, woodland, wetland and disturbed vegetation. Grassland communities have the highest plant diversity and wetland vegetation the lowest. Floristic composition indicates that the vegetation of the Rocky Highveld Grassland has affinities to the grassland and savanna biomes and also to the Afromontane vegetation of the Great Escarpment. An ordination scatter diagram shows the distribution of the 14 plant communities or sub-communities along a soil moisture gradient, as well as along a soil depth/surface rock gradient. The sequence of communities along the soil moisture gradient is used for calculating beta-diversity indices. It is concluded that the relatively small size of the Witbank Nature Reserve is unlikely to have significant negative effects on the phytodiversity of the various plant communities. This nature reserve is therefore of considerable importance in conserving a representative sample of the Rocky Highveld Grassland.

scholarly journals Climate and plant community diversity in space and time

2020 ◽  
Vol 117 (9) ◽  
pp. 4464-4470 ◽  
Author(s):  
Susan Harrison ◽  
Marko J. Spasojevic ◽  
Daijiang Li
Keyword(s):  
Plant Community ◽  
Plant Diversity ◽  
Phylogenetic Diversity ◽  
Spatial Scales ◽  
Community Diversity ◽  
Niche Conservatism ◽  
Space And Time ◽  
Drying Trend ◽  
Functional And Phylogenetic Diversity ◽  
Over Time

Climate strongly shapes plant diversity over large spatial scales, with relatively warm and wet (benign, productive) regions supporting greater numbers of species. Unresolved aspects of this relationship include what causes it, whether it permeates to community diversity at smaller spatial scales, whether it is accompanied by patterns in functional and phylogenetic diversity as some hypotheses predict, and whether it is paralleled by climate-driven changes in diversity over time. Here, studies of Californian plants are reviewed and new analyses are conducted to synthesize climate–diversity relationships in space and time. Across spatial scales and organizational levels, plant diversity is maximized in more productive (wetter) climates, and these consistent spatial relationships are mirrored in losses of taxonomic, functional, and phylogenetic diversity over time during a recent climatic drying trend. These results support the tolerance and climatic niche conservatism hypotheses for climate–diversity relationships, and suggest there is some predictability to future changes in diversity in water-limited climates.

scholarly journals Diversity Indices of Plant Communities and Their Rhizosphere Microbiomes: An Attempt to Find the Connection

2021 ◽  
Vol 9 (11) ◽  
pp. 2339
Author(s):  
Aleksei O. Zverev ◽  
Arina A. Kichko ◽  
Aleksandr G. Pinaev ◽  
Nikolay A. Provorov ◽  
Evgeny E. Andronov
Keyword(s):  
Microbial Communities ◽  
Plant Communities ◽  
Plant Diversity ◽  
Beta Diversity ◽  
Mutual Influence ◽  
Plant Root ◽  
Alpha Diversity ◽  
Diversity Indices ◽  
Alpha And Beta Diversity ◽  
Highly Correlated

The rhizosphere community represents an “ecological interface” between plant and soil, providing the plant with a number of advantages. Despite close connection and mutual influence in this system, the knowledge about the connection of plant and rhizosphere diversity is still controversial. One of the most valuable factors of this uncertainty is a rough estimation of plant diversity. NGS sequencing can make the estimations of the plant community more precise than classical geobotanical methods. We investigate fallow and crop sites, which are similar in terms of environmental conditions and soil legacy, yet at the same time are significantly different in terms of plant diversity. We explored amplicons of both the plant root mass (ITS1 DNA) and the microbial communities (16S rDNA); determined alpha- and beta-diversity indices and their correlation, and performed differential abundance analysis. In the analysis, there is no correlation between the alpha-diversity indices of plants and the rhizosphere microbial communities. The beta-diversity between rhizosphere microbial communities and plant communities is highly correlated (R = 0.866, p = 0.01). ITS1 sequencing is effective for the description of plant root communities. There is a connection between rhizosphere communities and the composition of plants, but on the alpha-diversity level we found no correlation. In the future, the connection of alpha-diversities should be explored using ITS1 sequencing, even in more similar plant communities—for example, in different synusia.

scholarly journals Rafflesia patma Blume in Pananjung Pangandaran Nature Reserve, West Java: Population Structure, Distribution Patterns, and Environmental Influences

2021 ◽  
Vol 6 (3) ◽  
pp. 64800
Author(s):  
Bahana Aditya Adnan ◽  
Suwarno Hadisusanto ◽  
Purnomo Purnomo
Keyword(s):  
Population Structure ◽  
Nature Reserve ◽  
Principal Component ◽  
Sampling Technique ◽  
Distribution Patterns ◽  
Survey Method ◽  
Endemic Plant ◽  
West Java ◽  
Research Areas ◽  
Morisita Index

Rafflesia patma is an endemic plant of Pangandaran, West Java which is protected because of its rare status. The purpose of this research is to study the population structure, distribution patterns, and the effect of the physical environment of abundance R. patma in Pananjung Pangandaran Nature Reserve, West Java. The method used in this research was a survey method with a purposive sampling technique. Sampling was conducted using quadrat plots. The population pattern distribution was defined by a standardized Morisita index, and the analysis of abiotic environmental factors was determined by Principal Component Analysis (PCA) using PAST3. The results showed that there were 114 R. patma individuals scattered in several research areas in Pananjung Pangandaran Nature Reserve, they were Gua Parat (3 individuals), Cilegon (13 individuals), Pasir Putih (12 individuals), Badeto (48 individuals), and Curug Leutik (38 individuals). The distribution pattern of R. patma in Pananjung Pangandaran Nature Reserve was clustered with the Morisita index value (Id) > 1. Based on the PCA analysis, results that support the classification of the cluster analysis were obtained. Based on four abiotic environmental conditions analyzed, the most dominant character in influencing the distribution patterns and population structure of R. patma is light intensity. 

Sign in / Sign up

Export Citation Format

Share Document