scholarly journals Reconciling biome-wide conservation of an apex carnivore with land-use economics in the increasingly threatened Pantanal wetlands

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fernando R. Tortato ◽  
Rafael Hoogesteijn ◽  
Allison L. Devlin ◽  
Howard B. Quigley ◽  
Fábio Bolzan ◽  
...  

AbstractConservation of carnivores involves finding solutions to minimize habitat loss and human-wildlife conflict. Understanding the nature of land-use economics can allow us to mitigate both threats. In the Pantanal, the two main economic activities are cattle ranching and ecotourism, each of which directly and indirectly affect the persistence of jaguars (Panthera onca). To understand how the geography of these economic activities is related to jaguar populations, we developed a jaguar distribution model (JDM), livestock density model, and ecotourism lodge density model for the Pantanal. Due to the recent wildfires within the Pantanal, we also assess the impact of burnt areas that are suitable for jaguars, cattle ranching, and tourism. Our JDM indicate that 64% of the Pantanal holds suitable habitat for jaguars. However, jaguar habitat suitability was positively correlated with ecotourism, but negatively correlated with areas most suitable for intensive cattle-ranching. This demonstrates a biome-wide scenario compatible with jaguar conservation. Of particular concern, recent wildfires overlap most suitable areas for jaguars. If wildfires become increasingly frequent, this would represent a serious threat to jaguars and many other wildlife populations. We emphasize the global importance of the Pantanal wetland ecoregion as a key stronghold for long-term jaguar conservation.

2021 ◽  
Author(s):  
Fernando R. Tortato ◽  
Rafael Hoogesteijn ◽  
Allison L. Devlin ◽  
Howard B. Quigley ◽  
Fábio Bolzan ◽  
...  

Abstract Conservation of carnivores involves finding solutions to minimize habitat loss and human-wildlife conflicts, and understanding the nature of land-use economics can allow us to mitigate both threats. In the Pantanal, the two main economic activities are cattle ranching and ecotourism, each of which directly and indirectly affect the persistence of jaguars (Panthera onca). To understand how the geography of these economic activities is related to jaguar populations, we developed a jaguar distribution model (JDM), livestock density model, and ecotourism lodge density model for the Pantanal. Due to the recent wildfires within the Pantanal, we also assess the impact of burnt areas that are suitable for jaguars, cattle ranching, and tourism. Our JDM indicate that 64% of the Pantanal holds suitable habitat for jaguars. However, jaguar habitat suitability was positively correlated with ecotourism, but negatively correlated with areas most suitable for intensive cattle-ranching. This demonstrates a biome-wide scenario compatible with jaguar conservation. Of particular concern, recent wildfires overlap most suitable areas for jaguars. If wildfires become increasingly frequent, this would represent a serious threat to jaguars and many other wildlife populations. We emphasize the global importance of the Pantanal wetland ecoregion as a key stronghold for long-term jaguar conservation.


2018 ◽  
Vol 47 (5) ◽  
pp. 745-758
Author(s):  
Adekunle Moruf Alabi ◽  
Mubarak Olatunji Lasisi ◽  
Maryam Abimbola Azeez

Urban growth is one of the indicators that reflects human interaction with the environment and has a direct effect on land use change. Continuous demand for space in Nigeria’s urban markets to accommodate shops and other retail outlets used for informal economic activities is accompanied by a change of use. This study examined the impact of informal economic activities on change of use in Bola Ige International Market, Ibadan. The concept of informal economy and the bid rent theory provided the conceptual/theoretical framework for this study. Geographical Information System was used to capture the change of use between 2006 and 2016. Land used for informal economic activities increased from 39.45% in 2006 to 55.35% in 2016, signifying a 15.9% increase. This implies that other land uses have been illegally converted and encroached. Transportation land use decreased from 31.47% in 2006 to 30.28% in 2011 and to 28.73% in 2016. Land used for open space (including parking space, and open trading area) which was 26.7% in 2006 reduced to 20.24% and 11.05% in 2011 and 2016, respectively. Most of the green areas (62.1%) have been converted to informal trading spaces between 2006 and 2016. Illegal change of use was credited to harsh economic condition in the country, and the engagement of the unemployed and retirees in informal sector economic activities. It was suggested that urban managers in conjunction with informed activists, researchers and citizens need to formulate and implement planning regulations that will integrate informal economic activities.


2020 ◽  
Vol 2 (2) ◽  
pp. 156-164
Author(s):  
Elysa Wulandari ◽  
Zahriah Zahriah ◽  
Zahrul Fuadi ◽  
Farisa Sabila

Abstract - This paper reveals how the land use change process occurred due to the construction of post-tsunami relocation housing environments, and its impact on the pattern of daily economic activities of local communities in the coastal hilly areas. This study is important along with UU no. 24 Tahun 2007 concerning disaster management that disaster reconstruction activities must take into account the character of the local community and environmental sustainability. The phenomenological approach in this study is by observing the symptoms of the interaction between the artificial environment of the estate settlement, rural environment, and local residents-immigrants and the impact of the system's sustainability in the region. The data such as: 1) pre-tsunami and current land use maps (2020); 2) observation data, regarding daily activities of economic activities in the area; 3) interviews with community leaders to explain the dynamics of local people's economic activities. The analysis method uses a manual interaction diagram system, to read the causality structure which analyzed with “logic of space”. The results are: a) the location of relocated housing has shifted the location of livestock grazing and agricultural gardens towards hills as well as developing mining business activities C about 0.5-1Km from the housing, which is at risk of natural hazards; b) the housing environment somehow hinders the people’s daily freedom of movement and livestock towards the hills. Livestock sometimes cross residential areas and even eat plants in house yards and green open spaces and these disturb the comfort of residential residents. The conclusion is that the pattern of placing the relocated housing environment has created “space in space” which changes the pattern of community home-range activities. Suggestions for the sustainability of the economic life of local residents and the comfort of living for newcomers are the need for a strategy to organize an official route of movement to the hills and to make improvements to land for the hills, as well as the obligation to permanently fence off the housing environment. Both things are done with systems approach and synergize the interests of local communities and migrant communities. Keywords – relocated housing, vernacular settlements, hilly coastal areas, spatial behavior, Aceh Besar


PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12001
Author(s):  
Jinbo Fu ◽  
Linlin Zhao ◽  
Changdong Liu ◽  
Bin Sun

As IUCN critically vulnerable species,the Indo-Pacific humpback dolphins (Sousa chinensis) have attracted great public attention in recent years. The threats of human disturbance and environmental pollution to this population have been documented extensively. However, research on the sensitivity of this species to climate change is lacking. To understand the effect of climate change on the potential distribution of Sousa chinensis, we developed a weighted ensemble model based on 82 occurrence records and six predictor variables (e.g., ocean depth, distance to shore, mean temperature, salinity, ice thickness, and current velocity). According to the true skill statistic (TSS) and the area under the receiver operating characteristic curve (AUC), our ensemble model presented higher prediction precision than most of the single-algorithm models. It also indicated that ocean depth and distance to shore were the most important predictors in shaping the distribution patterns. The projections for the 2050s and 2100s from our ensemble model indicated a severe adverse impact of climate change on the Sousa chinensis habitat. Over 75% and 80% of the suitable habitat in the present day will be lost in all representative concentration pathway emission scenarios (RCPS) in the 2050s and 2100s, respectively. With the increased numbers of records of stranding and deaths of Sousa chinensis in recent years, strict management regulations and conservation plans are urgent to safeguard the current suitable habitats. Due to habitat contraction and poleward shift in the future, adaptive management strategies, including designing new reserves and adjusting the location and range of reserves according to the geographical distribution of Sousa chinensis, should be formulated to minimize the impacts of climate change on this species.


2021 ◽  
Vol 13 (16) ◽  
pp. 9276
Author(s):  
Nareth Nut ◽  
Machito Mihara ◽  
Jaehak Jeong ◽  
Bunthan Ngo ◽  
Gilbert Sigua ◽  
...  

Agricultural expansion and urban development without proper soil erosion control measures have become major environmental problems in Cambodia. Due to a high population growth rate and increased economic activities, land use and land cover (LULC) changes will cause environmental disturbances, particularly soil erosion. This research aimed to estimate total amounts of soil loss using the Revised Universal Soil Loss Equation (RUSLE) model within a Geographic Information System (GIS) environment. LULC maps of Japan International Cooperation Agency (JICA) 2002 and Mekong River Commission (MRC) 2015 were used to evaluate the impact of LULC on soil erosion loss in Stung Sangkae catchment. LULC dynamics for the study periods in Stung Sangkae catchment showed that the catchment experienced a rapid conversion of forests to paddy rice fields and other croplands. The results indicated that the average soil loss from the catchment was 3.1 and 7.6 t/ha/y for the 2002 and 2015 periods, respectively. The estimated total soil loss in the 2002 and 2015 periods was 1.9 million t/y and 4.5 million t/y, respectively. The soil erosion was accelerated by steep slopes combined with the high velocity and erosivity of stormwater runoff. The spatial distribution of soil loss showed that the highest value (14.3 to 62.9 t/ha/y) was recorded in the central, southwestern and upland parts of the catchment. It is recommended that priority should be given to erosion hot spot areas, and appropriate soil and water conservation practices should be adopted to restore degraded lands.


Author(s):  
Mitelo Subakanya ◽  
Gelson Tembo ◽  
Robert B. Richardson

Damage to crops from wildlife interference is a common threat to food security among rural communities in or near Game Management Areas (GMAs) in Zambia. This study uses a two-stage econometric model and cross-sectional data from a survey of 2,769 households to determine the impact of land use planning on the probability and extent of wildlife-inflicted crop damage. The results show that crop damage is higher in GMAs as compared to non-GMAs, and that land use planning could be an effective tool to significantly reduce the likelihood of such damage. These findings suggest that there is merit in the current drive to develop and implement land use plans as means to minimize human-wildlife conflict such as crop damage. This is especially critical as Zambian conservation policies do not have an explicit provision for compensation in the event of damage from wildlife.


Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 429
Author(s):  
Yadong Xu ◽  
Yi Huang ◽  
Huiru Zhao ◽  
Meiling Yang ◽  
Yuqi Zhuang ◽  
...  

Cypripedium japonicum is an endangered terrestrial orchid species with high ornamental and medicinal value. As global warming continues to intensify, the survival of C. japonicum will be further challenged. Understanding the impact of climate change on its potential distribution is of great significance to conserve this species. In this study, we established an ensemble species distribution model based on occurrence records of C. japonicum and 13 environmental variables to predict its potential distribution under current and future climatic conditions. The results show that the true skill statistic (TSS), Cohen’s kappa statistic (Kappa), and the area under the receiver operating characteristic curve (AUC) values of the ensemble model were 0.968, 0.906, and 0.995, respectively, providing more robust predictions. The key environmental variables affecting the distribution of C. japonicum were the precipitation in the warmest quarter (Bio18) and the mean temperature in the driest quarter (Bio9). Under future climatic conditions, the total suitable habitat of C. japonicum will increase slightly and tend to migrate northwestward, but the highly suitable areas will be severely lost. By 2070, the loss of its highly suitable habitat area will reach 57.69–72.24% under representative concentration pathway (RCP) 4.5 and 8.5 respectively, and the highly suitable habitats in Zhejiang and Anhui will almost disappear. It is noteworthy that the highly suitable habitat of C. japonicum has never crossed the Qinba mountainous area during the migration process of the suitable habitat to the northwest. Meanwhile, as the best-preserved area of highly suitable habitat for C. japonicum in the future, the Qinba mountainous area is of great significance to protect the wild germplasm resources of C. japonicum. In addition, we found that most of the changes predicted for 2070 will already be seen in 2050; the problem of climate change may be more urgent than it is believed.


2019 ◽  
Author(s):  
Arteks Jurnal Teknik Arsitektur

Culture has a very important essence in people's lives. Values that lead to culture seem to be the “breath” for the survival of society. A well-developed culture that can be viewed from both physical and non-physical aspects inherited from generation to generation becomes a tradition that has strong local wisdom. Yet along with its development, its existence may undergo a shift. This condition may exist because of the presence of other cultures that intentionally brought by or unintentionally emerge along with the presence of immigrants. This study aims to identify the shifts of cultural values of the people in Prawirotaman Village, especially in the aspect of community economic activities, through several stages such as: (1) Mapping changes in residential spatial planning in Prawirotaman Village; (2) Exploring economic activities changes in Prawirotaman Village. The results of the study indicate a change in governance and use of land in Prawirotaman Village. This change indeed has implications to socio-economic activities and most particularly to economic or livelihood system.


2021 ◽  
Author(s):  
Courtney Dvorsky ◽  
Kambrie Riddle ◽  
Michelle Boone

Abstract Residential areas are increasing on the landscape but their ability to provide suitable habitat is often based on management for recreational use and aesthetics. Amphibians rely on both aquatic and terrestrial habitat making them susceptible to changes in land-cover and land-use. As anthropogenic land-use change increases, it is imperative to assess how pond management practices impact aquatic communities. We assessed the impact of Aquashade (a common non-toxic pond dye) and copper sulfate (a toxic algaecide) on American toad (Anaxyrus americanus), northern leopard frog (Lithobates pipiens), and Cope’s gray treefrog (Hyla chrysoscelis) metamorphosis in outdoor mesocosm experiments. We also evaluated the relative impact of tadpole grazing and chemical treatment on phytoplankton and periphyton abundance. We found no significant effects of pond management treatment on anuran metamorphosis, suggesting that addition of Aquashade and copper sulfate does not significantly impact anurans under these experimental conditions. However, while we found no differences in phytoplankton and periphyton abundance due to pond management treatment, presence of tadpoles significantly decreased phytoplankton and periphyton abundance over time. This result suggests that the creation of suitable pond habitat for anuran tadpoles may be an efficient and ecologically beneficial form of pond management treatment to maintain water quality.


Arsitektura ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Dina Arifia ◽  
Soedwiwahjono Soedwiwahjono ◽  
Rizon Pamardhi Utomo

<p><em>Solo Baru </em><em>region</em><em> has a very strategic location and were originally intended for residential areas, but then experienced a rapid development of economic activities. The development of economic activity is the most visible trade activities and services that continue to increase precisely since 2002. The development of trade and services activities is of course have an influence on land use changes that occur rapidly in Solo Baru </em><em>r</em><em>egion. Based on these issues, the formulation of the problem in this research is how the influence brought about by the development of the activity of trade in services to changes in land use. In line with these problems, this study aims to determine the effect of the development of trading activities and services to changes in land use Solo Baru Region. The method used is quantitative descriptive to determine the level of development to later described spatially. These results indicate that the development of trade and services activities has encouraged the development of other activities either similar activities (commercial) as well as supporting activities (housing, public services, and industry) so the impact on the provision of land. The need for this land that drives the changes in land use, both in terms of area, intensity, and land use patterns are formed. Developments are vertically making it more influential in the development of land compared to the intensity of the land area. Besides land development patterns that are formed are random pattern of development as the region woke formed does not have a specific shape (sporadic) and develop segmental.</em><em></em></p><p> </p><p><strong><em>Keywords</em></strong><em>: Activities Development, Trade and Services Activity, Land Use Change</em></p>


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