scholarly journals Morphodynamic and Climatic Control on Sandy Beaches: Challenges of Geoenvironmental Studies for the Conservation of Biodiversity and the Maintenance of Ecosystem Services

Author(s):  
Anderson Abbehusen Freire de Carvalho ◽  
Iracema Reimão Silva

As praias arenosas podem ser divididas em dois ecossistemas praiais: os autossustentáveis e os de interface, que respondem de forma diferente ao controle mofordinâmico e climático sobre a biodiversidade. Os principais fatores que atuam sobre a biodiversidade das praias arenosas são a energia das ondas e a ação dos ventos, que são responsáveis pela movimentação do sedimento e a determinação do relevo da praia. As variações climáticas, a exemplo das tempestades, também influenciam de forma significativa a dinâmica dos ecossistemas praiais. Mesmo possuindo um equilíbrio ecológico delicado, as praias arenosas não têm sido reconhecidas como áreas  prioritárias para conservação, talvez pela ausência de uma cobertura vegetal exuberante ou pela pouca percepção da sua biodiversidade. Para boa parte da população que frequenta as zonas costeiras, as praias arenosas aparentam ser um sistema biologicamente pobre e valorizado apenas pelos aspectos paisagísticos e de recreação. O uso recreativo intenso e a ocupação desordenada do pós-praia aumentam os impactos sobre esses ambientes, alterando a deposição de sedimentos, dificultando o deslocamento da biota e aumentando os processos erosivos, comprometendo a funcionalidade ecossistêmica. Diante deste contexto, se faz necessário realizar estudosde indicadores que possam fomentar estratégias adequadas para a gestão costeira, preservando o equilíbrio dos ecossistemas e a manutenção dos seus serviços, inclusive os considerados essenciais para a espécie humana. A presente revisão tem como objetivo principal discutir como os processos geoambientais, a exemplo dos morfodinâmicos e climáticos, atuam sobre a biodiversidade das praias arenosas e como estes fenômenos podem influenciar o equilíbrio ecossistêmico e a oferta dos seus serviços. Dentro desse cenário também foi discutido as possíveis interferências das alterações climáticas, a ocupação desordenada dos ambientes costeiros e suas implicações para conservação das praias arenosas.

2012 ◽  
Vol 2 (2) ◽  
pp. 217-233 ◽  
Author(s):  
Colin T. Reid

AbstractThere is growing interest in the use of market mechanisms, such as offsetting and payments for ecosystem services, to further the conservation of biodiversity. The specific needs of biodiversity mean that this approach faces significant challenges in terms of defining the units that can be the subject of the economic or market devices, of ensuring that such mechanisms do deliver conservation gains and of establishing appropriate governance arrangements. There are also ethical concerns that a market approach entails a commodification of nature which sacrifices some of the very elements which make nature valuable to us. The market-based schemes currently being operated and devised should be studied carefully to see how successfully these challenges can be met.


Author(s):  
Esther Robbe ◽  
Jana Woelfel ◽  
Arūnas Balčiūnas ◽  
Gerald Schernewski

AbstractAs accumulation zones, sandy beaches are temporal sinks for beach wrack and litter, both often seen as nuisances to tourists. Consequently, there is a need for beach management and an enhanced political interest to evaluate their ecosystem services. We applied a new online multidisciplinary assessment approach differentiating between the provision, potential, and flow at German and Lithuanian beaches (Southern Baltic Sea). We selected a set of services and assessed four beach scenarios developed accordingly to common management measures (different beach wrack and litter accumulations). We conducted comparative assessments involving 39 external experts using spread-sheets and workshops, an online survey as well as a combined data-based approach. Results indicated the relative importance of cultural (52.2%), regulating and maintenance (37.4%), and provisioning services (10.4%). Assessed impact scores showed that the removal of beach wrack is not favorable with regard to the overall ecosystem service provision. Contrarily, the removal of litter can increase the service flow significantly. When removing beach wrack, synergies between services should be used, i.e., use of biomass as material or further processing. However, trade-offs prevail between cultural services and the overall provision of beach ecosystem services (i.e., coastal protection and biodiversity). We recommend developing new and innovative beach cleaning techniques and procedures, i.e., different spatio-temporal patterns, e.g., mechanical vs. manually, daily vs. on-demand, whole beach width vs. patches. Our fast and easy-to-apply assessment approach can support decision-making processes within sustainable coastal management allowing us to show and compare the impacts of measures from a holistic ecosystem services perspective.


2021 ◽  
Vol 13 (6) ◽  
pp. 3186
Author(s):  
Mariaenrica Frigione ◽  
Gabriele Marini ◽  
Maurizio Pinna

The dispersion of commercial plastics in the marine environments is a major threat to biodiversity and ecosystem services of the last decades. The lower density of the plastics with respect to marine water density determines their floating, transferring, and accumulation in sandy beaches. Sandy beaches represent a natural sink ecosystem for marine plastics, where the latter are fragmented and photo-degraded in relation to the kind of polymer. Here, we propose an accurate and cost-effective method, the differential scanning calorimetry (DSC), to identify different polymers from plastic samples collected on the Aquatina di Frigole beach (Apulia Region, Southeast of Italy), included in the NATURA 2000 Site coded as IT9150003. Our results reveal the exclusive presence of thermoplastic polymers in the beach plastic samples, mostly belonging to the polyolefin family. They appear to be remnants of larger plastic fragments, which could impact biodiversity and ecosystem services such as beach recreation activities and tourism.


Author(s):  
INOCENCIO E. BUOT, JR.

The paper emphasized the establishment of the Globally Important Agricultural Heritage Systems(GIAHS) and its purpose of dynamic conservation of biodiversity and culture in socioecological productionlandscapes and seascapes (SEPLS), particularly in satoyama landscapes in the Philippines, in Asia and theworld. Then, it outlines the next steps to be taken in order to attain sustainability and resiliency, namely;1) expansion of GIAHS sites and network through exploring Nationally Important Agricultural HeritageSystems (NIAHS) and Locally Important Agricultural Heritage Systems (LIAHS), 2) using internationalapproach and frameworks with customization as necessary even in working at the national and locallevels, 3) tapping leading universities to serve as focal points especially in the area of sustainability andresiliency research, economic and ecological valuation studies of ecosystem services, and 4) treatingGIAHS landscapes as a community and NOT as a commodity.Keywords: Ecology, human-nature interaction, Satoyama, socioecological production landscapes, resiliency,descriptive design, Philippines


Data in Brief ◽  
2019 ◽  
Vol 25 ◽  
pp. 104078
Author(s):  
Charlène Kermagoret ◽  
Joachim Claudet ◽  
Valérie Derolez ◽  
Maggy M. Nugues ◽  
Vincent Ouisse ◽  
...  

2020 ◽  
Vol 18 (4) ◽  
pp. 238-242
Author(s):  
Fernando A.O. Silveira ◽  
Lucas N. Perillo ◽  
Flávio F. Carmo ◽  
Luciana H.Y. Kamino ◽  
Nara F.O. Mota ◽  
...  

Author(s):  
Edmundo Barrios ◽  
Vivian Valencia ◽  
Mattias Jonsson ◽  
Alain Brauman ◽  
Kurniatun Hairiah ◽  
...  

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