scholarly journals Autecology of Melastoma malabathricum, an invasive species in the Way Kambas National Park, Indonesia

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
JANI MASTER ◽  
IBNUL QAYIM ◽  
DEDE SETIADI ◽  
NYOTO SANTOSO

Abstract. Master J, Qayim I, Setiadi D, Santoso N. 2020. Autecology of Melastoma malabathricum, an invasive species in the Way Kambas National Park, Indonesia. Biodiversitas 21: 2303-2310. Melastoma malabathricum has become one of the invasive plants in the Way Kambas National Park (WKNP), Lampung, Indonesia. This plant is feared to be a problem in efforts to conserve biodiversity in the WKNP area. Therefore, this study aimed to analyze the factors causing the invasion of these plants. The vegetation analysis plot was placed on three types of habitats in the study location, namely, forests, swamps, and invaded swamps, then measurements and records of vegetation data and abiotic factors were recorded in each plot. The results reveal that M. malabathricum dominates swamp habitat and negatively associated with trees, which can provide canopy. Abiotic factors, such as canopy cover, water level, and soil fertility, become supporting factors for the invasion. In addition, climate change, which is causing drought also contributes to the invasion of M. malabathricum at the WKNP.

2021 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Putri Diana ◽  
Husnarika Febriani ◽  
Melfa Aisyah Hutasuhut

Introduction: The purpose of this study was to determine the type and diversity of invasive plants in Batang Gadis National Park (BGNP). Materials and Methods: This study was conducted in Batang Gadis National Park Resort 7 Sopotinjak, Mandailing Natal from February until April 2021. This study using the quadratic method by making transects and each transect is divided into 8 plots. Laying plots by purposive sampling as many as 8 plots. Results: BGNP Resort 7 had the invasive plants consisted of 12 families, 20 species and 1287 individuals. The highest species was found in Melastoma malabathricum L (230) and the highest important value index was found in Strobilanthes reptans (35.82%), while the species with the lowest significance index was Ageratum conyzoides (3.40%). The invasive plant diversity index was categorized as moderate (H'= 2.43).


Oryx ◽  
1997 ◽  
Vol 31 (2) ◽  
pp. 143-150
Author(s):  
Joanne Reilly ◽  
Guy Hills Spedding ◽  
Apriawan

The Sumatran rhino Dicerorhinus sumatrensis is regarded as critically endangered with a world population of approximately 400. In 1991 it was recorded in Way Kambas National Park, Sumatra, Indonesia, 30 years after the park's last rhino was believed to have been shot. A Sumatran Rhino Population and Habitat Viability Analysis (PHVA) workshop in 1993 recommended an immediate survey be carried out to assess the rhino population in the park. The Way Kambas Project recorded observations of rhino sign between 1993 and 1995. Sign was most frequently observed along trails in mature secondary forest. Data from the areas surveyed suggest the presence of at least four rhinos.


2020 ◽  
pp. jeb.230326
Author(s):  
Carmen R. B. da Silva ◽  
Julian E. Beaman ◽  
James B. Dorey ◽  
Sarah J. Barker ◽  
Nicholas C. Congedi ◽  
...  

Anthropogenic climate change and invasive species are two of the greatest threats to biodiversity, affecting the survival, fitness and distribution of many species around the globe. Invasive species are often expected to have broad thermal tolerances, be highly plastic, or have high adaptive potential when faced with novel environments. Tropical island ectotherms are expected to be vulnerable to climate change as they often have narrow thermal tolerances and limited plasticity. In Fiji, only one species of endemic bee, Homalictus fijiensis, is commonly found in the lowland regions, but two invasive bee species, Braunsapis puangensis and Ceratina dentipes, have recently been introduced to Fiji. These introduced species pollinate invasive plants and might compete with H. fijiensis and other native pollinators for resources. To test whether certain performance traits promote invasiveness of some species, and to determine which species are the most vulnerable to climate change, we compared the thermal tolerance, desiccation resistance, metabolic rate, and seasonal performance adjustments of endemic and invasive bees in Fiji. The two invasive species tended to be more resistant to thermal and desiccation stress than H. fijiensis, while H. fijiensis had greater capacity to adjust their CTMAX with season, and H. fijiensis females tended to have higher metabolic rates, than B. puangensis females. These findings provide mixed support for current hypotheses for the functional basis of the success of invasive species, however, we expect the invasive bees in Fiji to be more resilient to climate change due to their increased thermal tolerance and desiccation resistance.


2008 ◽  
Vol 1 (4) ◽  
pp. 399-413 ◽  
Author(s):  
Cynthia S. Brown ◽  
Val J. Anderson ◽  
Victor P. Claassen ◽  
Mark E. Stannard ◽  
Linda M. Wilson ◽  
...  

AbstractInvasive plants are a common problem in the management and restoration of degraded lands in the semiarid western United States, but are often not the primary focus of restoration ecologists. Likewise, restoring native vegetation has not been a major concern of weed scientists. But trends in the literature demonstrate increasing overlap of these fields, and greater collaboration between them can lead to improved efficacy of restoration efforts. Succession and ecosystem development are the products of complex interactions of abiotic and biotic factors. Our greatest restoration and invasive plant management successes should result when we take advantage of these natural processes. Recent shifts in management objectives have generated approaches to directing plant community development that utilize species that are strong competitors with invasive species as a bridge to the establishment of native perennial vegetation. Soil water and nutrient characteristics and their interactions can affect desired and undesired plant species differentially and may be manipulated to favor establishment and persistence of desired perennial plant communities. Selection of appropriate plant materials is also essential. Species assemblages that suppress or exclude invaders and competitive plant materials that are well adapted to restoration site conditions are important keys to success. We provide guidelines for restoration based on the fundamental ecological principles underlying succession. Knowledge of the complex interactions among the biotic and abiotic factors that affect successional processes and ecosystem development, and increased collaboration between weed scientists and restoration ecologists hold promise for improving restoration success and invasive species management.


2021 ◽  
Vol 9 (2) ◽  
pp. 270
Author(s):  
Miftahudin Miftahudin ◽  
Gunardi Djoko Winarno ◽  
Trio Santoso ◽  
Arief Darmawan

Way Kambas National Park is famous as an endemic habitat for the Sumatran Elephant (Elephas maximus sumatranus) precisely in the Elephant Training Center area as a base for ecotourism activities. Statistics on the number of tourist visits turned out to show a decrease, therefore we need an innovative eco-tourism breakthrough one of which has the potential to be developed is the Elephant Tour ecotourism. The purpose of this study is to identify potential attraction objects that exist in the Way Kambas National Park Elephant Training Center and interpret ecotourism path plans. The method used in this study is field observations to obtain data on potential points and ecotourism path. The data that has been obtained is then tabulated for descriptive and spatial analysis. The results showed that the object of attraction in the Way Kambas National Park precisely in the area of the Elephant Training Center consists of flora, fauna, beauty landscape and planned ecotourism path into two, long and short trips.


2020 ◽  
Vol 12 (4) ◽  
pp. 1448 ◽  
Author(s):  
Lea Johnson ◽  
Tara Trammell ◽  
Tracie Bishop ◽  
Joshua Barth ◽  
Scott Drzyzga ◽  
...  

Streamside forests of urbanizing coastal regions lie at the nexus of global changes: rising sea levels, increasing storm surge, expanding urban development, and invasive species. To understand how these combined stressors affect forest conditions, we identified forest patches adjacent to urban land, analyzed adjacent land cover, modeled forest inundation, and sampled 100 sites across the Chesapeake Bay and Delaware Bay watersheds. We found that the majority of forest patches are adjacent to urban land and projected flooding will affect 8–19% of regional forested land. We observed non-native invasive plants in 94% of forest plots. Trees were predominantly native, but over half of shrub stems were invasive species and more than 80% of plots contained invasive woody vines. Disturbance of human origin was correlated with abundance of invasive trees. Signs of deer activity were common. Richness and number of growth forms of invasive plants were related to adjacent agricultural land cover. These data reveal that streamside forests are impacted by the interacting stressors of urbanization, climate change, and invasive species spread. Our results emphasize the importance of protection and restoration of forests in urban regions and point to the need for a social-ecological systems approach to improve their condition.


2014 ◽  
Vol 2 (1) ◽  
pp. 87
Author(s):  
Danang Arif Maullana ◽  
Arief Darmawan

Land cover changes in Way Kambas National Park (TNWK) changes rapidly. Data on changes in land cover in 1996, 2002 and 2010 in TNWKanalyzed by using remote sensing and Geographic Information Systems (GIS). Analysis also includes changes in land cover in each zoning park management.The research was conducted in June-September 2012 at the Way Kambas National Park. Data collected in the form of Landsat ETM + and TM (1996, 2002, and 2010), field verification points, and attribute data in the form of zoning. Spatial data processed with ERDAS imagine software version 8.5 and Arc View version 3.3, while the data is processed by descriptive attributes and analyzed qualitatively. Land cover types in the Way Kambas National Park is divided into 9 classes of forest, wetland forests, wetlands, shrubs, reeds, open land, water bodies, lading, and no data (cloud and cloud shadow). The largest land cover on the forest zone and the intensive use of coarse grass while special conservation zone and the core zone has the largest forest cover in the form of forest. Keyword : GIS, land cover, Way Kambas National Park


2021 ◽  
pp. 1-21
Author(s):  
William Coville ◽  
Bridget J. Griffin ◽  
Bethany A. Bradley

Abstract Invasive plants are expanding their ranges due to climate change, creating new challenges for invasive species management. Early detection and rapid response could address some nascent invasions, but limited resources make it impossible to monitor for every range shifting species. Here, we aimed to create a more focused watch list by evaluating the impacts of 87 plant species projected to shift into Northern New England (the states of Maine, New Hampshire, and/or Vermont). We used the Environmental Impact Classification for Alien Taxa (EICAT) protocol to evaluate all ecological impacts reported in the scientific literature, scoring ecological impacts from 1 (minimal concern) to 4 (major) depending on the level of reported impact. For each species, we also recorded any reported impacts on socioeconomic systems (agriculture, human health, or economics) as ‘present’. We found 24 range-shifting species with impacts on ecological communities, of which 22 have reported impacts in ecosystems common to northern New England. Almost all of these species also had impacts on socioeconomic systems and were available for purchase at ornamental plant retailers or online. Thus, these species can be considered high risk to northern New England with climate change based on their large negative impacts and potential to arrive quickly with deliberate human introduction. Our study demonstrates the use of impact assessments for creating targeted priority lists for invasive species monitoring and management.


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