scholarly journals Payment scheme for environmental services as a management strategy to regulate artisanal fishing in the Integrated Management District Cispata, Colombia

2021 ◽  
Vol 50 (1) ◽  
pp. 179-190
Author(s):  
Johann López ◽  
Andrea Contreras
Keyword(s):  
Management Strategy ◽  
Necessary Conditions ◽  
Integrated Management ◽  
Coastal Ecosystems ◽  
Environmental Services ◽  
Artisanal Fishing ◽  
Payment Scheme ◽  
Fishing Resources ◽  
Food Provision ◽  
Economic Instrument

Marine and coastal ecosystems are characterized as highly productive areas in terms of the benefits they provide to humanity, with food provision being one of the most important. In 2018, in the Cispata Integrated Management District (DMI Cispata), due to the decrease in fishing resources, artisanal fishermen signed agreements for the recovery of the resource; however, they have not been implemented for various reasons. This study shows the viability of a Payment Scheme for Environmental Services as an alternative to induce compliance with fishing agreements. The analysis developed here indicates that the DMI Cispata fulfills the necessary conditions to implement this economic instrument benefiting 20 fishing organizations in the area.

The role of deforestation risk and calibrated compensation in designing payments for environmental services

2008 ◽  
Vol 13 (3) ◽  
pp. 375-394 ◽  
Author(s):  
JENNIFER ALIX-GARCIA ◽  
ALAIN DE JANVRY ◽  
ELISABETH SADOULET
Keyword(s):  
Common Property ◽  
Budget Constraint ◽  
Environmental Services ◽  
Payments For Environmental Services ◽  
Land Productivity ◽  
Payment Scheme ◽  
Payment Schemes ◽  
Using Data ◽  
Poor Communities

ABSTRACTThis paper discusses the gain in efficiency from including deforestation risk as a targeting criterion in payments for environmental services (PES) programs. We contrast two payment schemes that we simulate using data from Mexican common property forests: a flat payment scheme with a cap on allowable hectares per enrollee, similar to the program implemented in many countries, and a payment that takes deforestation risk and heterogeneity in land productivity into account. We simulate the latter strategy both with and without a budget constraint. Using observed past deforestation, we find that while risk-targeted payments are far more efficient, capped flat payments are more egalitarian. We also consider the characteristics of communities receiving payments from both programs. We find that the risk-weighted scheme results in more payments to poor communities, and that these payments are more efficient than those made to non-poor ejidos. Finally, we show that the risk of deforestation can be predicted quite precisely with indicators that are easily observable and that cannot be manipulated by the community.

Testing Integrated Management Strategies for Tall Buttercup (Ranunculus acris) in Irrigated Hayfield Meadows

2015 ◽  
Vol 8 (4) ◽  
pp. 385-392
Author(s):  
Hally K. Strevey ◽  
Jane M. Mangold
Keyword(s):  
Management Strategy ◽  
Integrated Management ◽  
Management Strategies ◽  
Forage Production ◽  
Canadian Province ◽  
Herbicide Treatments ◽  
Production Research ◽  
Second Year ◽  
Ranunculus Acris ◽  
Plot Design

AbstractTall buttercup is an invasive forb that has been reported in all but eight states and one Canadian province. The species has been of concern in Montana where it has invaded over 8,300 ha, and it has been particularly problematic in irrigated hayfield meadows that are used for forage production. This study sought to develop an integrated management strategy to control tall buttercup while maintaining forage production. Research was conducted over 2 yr at flood-irrigated and subirrigated hayfield meadows near Twin Bridges, MT. Treatments were randomly applied in a split-plot design with four replications at both sites. Herbicide treatments occurred at the whole-plot level: nonsprayed, aminopyralid (172 g ai ha−1), aminocyclopyrachlor + chlorsulfuron (83 g ai ha−1+ 33 g ai ha−1), and dicamba (981 g ai ha−1). Split plots consisted of mowing and fertilization (28 kg N ha−1). All herbicides provided up to 2 yr of tall buttercup control at both sites. In the second year, aminocyclopyrachlor + chlorsulfuron and aminopyralid reduced tall buttercup by 93% and 96%, respectively, for the subirrigated and flood-irrigated sites. At the subirrigated site, mowing reduced tall buttercup by 71%, and fertilization reduced it by 57%. Forage decreased following aminocyclopyrachlor + chlorsulfuron treatments. The integration of herbicide, mowing, and fertilization did not improve tall buttercup control.

scholarly journals Integrated management strategy for improving the grain yield and nitrogen-use efficiency of winter wheat

2018 ◽  
Vol 17 (2) ◽  
pp. 315-327 ◽  
Author(s):  
Hai-cheng XU ◽  
Xing-long DAI ◽  
Jin-peng CHU ◽  
Yue-chao WANG ◽  
Li-jun YIN ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Management Strategy ◽  
Integrated Management ◽  
Nitrogen Use ◽  
Use Efficiency

INTEGRATED MANAGEMENT STRATEGY FOR COMPLEX GROUNDWATER CONTAMINATION AT A MEGASITE SCALE

2007 ◽  
pp. 567-577 ◽  
Author(s):  
Grzegorz Malina ◽  
Janusz Krupanek ◽  
Judith Sievers ◽  
Jochen Grossmann ◽  
Jeroen ter Meer ◽  
...  
Keyword(s):  
Groundwater Contamination ◽  
Management Strategy ◽  
Integrated Management

scholarly journals A Risk Assessment Model for Bacterial Leaf Spot of Pepper (Capsicum annuum), Caused by Xanthomonas euvesicatoria, Based on Concentrations of Macronutrients, Micronutrients, and Micronutrient Ratios

2017 ◽  
Vol 107 (11) ◽  
pp. 1331-1338
Author(s):  
B. Dutta ◽  
D. B. Langston ◽  
X. Luo ◽  
S. Carlson ◽  
J. Kichler ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Leaf Spot ◽  
Management Strategy ◽  
Integrated Management ◽  
Assessment Model ◽  
Bacterial Leaf Spot ◽  
Phytopathogenic Bacterium ◽  
Pathogenesis Related ◽  
Xanthomonas Euvesicatoria ◽  
Predicted Values

The phytopathogenic bacterium Xanthomonas euvesicatoria causes bacterial leaf spot (BLS) of pepper and has a worldwide distribution. BLS is difficult to control and an integrated management strategy that incorporates crop rotation, use of clean seed and clean plants, weed control, resistant varieties, applications of bactericides, biocontrol agents, and systemic acquired resistance (SAR) inducers is generally recommended. However, even with that arsenal of weapons, BLS can still be responsible for severe losses under favorable environmental conditions. Thus, additional tools need to be added to an overall integrated management strategy to combat BLS. In this article, we developed several models from 2012 to 2014 that were based on how macronutrients, micronutrients, and micronutrient ratios affect BLS severity. Factors used to select a model for validation included highly significant P values, high adjusted R2 values, low variance inflation factor values (<5), root mean square error, Mallow’s Cp, and high Akaike’s information criterion correction values. In addition, salicylic acid (SA) concentrations and relative expression of nonexpresser pathogenesis-related gene1 (NPR1) and pathogenesis-related protein 1 (PR1) in pepper tissues were also considered in model selection. A model (ECGA1) consisting of concentrations of copper, manganese, potassium, and the iron/zinc ratio as independent variables was used for validation in three different commercial pepper fields in Georgia: Colquitt County and Worth County in 2015 and Tift County in 2016. When area under the disease progress curve (AUDPC) values for two field sites (Colquitt and Worth Counties) in 2015 were pulled together and plotted against ECGA1-predicted values for both sites, the resulting relationship was highly significant (P = 0.0001) with an R2 value of 0.92. A significant relationship between observed AUDPC versus predicted values was also observed in Tift County in 2016 (P < 0.001; adjusted R2 = 0.98). Relative gene expression of both NPR1 and PR1 genes was significantly (P < 0.01) higher in pepper grown in predicted low-risk sites compared with pepper from high-risk sites in Colquitt, Worth, and Tift Counties. Although BLS severity will fluctuate depending on environmental conditions, the data indicate that the level of risk at a particular location may be influenced by how macronutrient and micronutrient concentrations affect plant disease resistance genes in the SAR pathway.

Control of Rattail Fescue (Vulpia myuros) in No-Till Winter Wheat

2014 ◽  
Vol 28 (3) ◽  
pp. 471-478 ◽  
Author(s):  
Nevin C. Lawrence ◽  
Ian C. Burke
Keyword(s):  
Winter Wheat ◽  
Pacific Northwest ◽  
Management Strategy ◽  
Integrated Management ◽  
No Till ◽  
The Pacific ◽  
Essential Components ◽  
Production Practices ◽  
Levels Of Control

Rattail fescue is a problematic weed for small grain producers in the Pacific Northwest when no-till production practices are used. Pyroxsulam and pyroxasulfone are two herbicides not previously evaluated for control of rattail fescue. Pyroxasulfone provided levels of control (> 74%) similar to flufenacet. Pyroxsulam did not consistently control (21 to 71%) rattail fescue. Rattail fescue biomass was reduced by pyroxasulfone and flufenacet compared to the nontreated control. Effective consistent rattail fescue control was only achieved where PRE herbicides were used. When managing rattail fescue, PRE herbicides pyroxasulfone and flufenacet plus metribuzin are essential components of an integrated management strategy.

scholarly journals SEASONAL FLUCTUATION OF ASIAN CITRUS PSYLLA POPULATIONS IN THE CITRUS ORCHARDS INFECTED WITH HUANGLONGBING IN SARGODHA, PAKISTAN

2017 ◽  
Vol 29 (1) ◽  
pp. 175
Author(s):  
Yasir Iftikhar ◽  
Imran U. Haq ◽  
Waqas Raza ◽  
Muhammad I. Ullah ◽  
Sajjad Ali ◽  
...  
Keyword(s):  
High Temperature ◽  
Environmental Factors ◽  
Minimum Temperature ◽  
Management Strategy ◽  
Integrated Management ◽  
Seasonal Fluctuation ◽  
Diaphorina Citri ◽  
Citrus Production ◽  
Citrus Orchards ◽  
Citrus Psylla

A study on seasonal fluctuation in Citrus psylla (Diaphorina citri) (CP) population in citrus orchards infected with Huanglongbing was carried out in relation to environmental factors in six tehsils of Sargodha district. The population of citrus psylla was reached to the peak twice in a year. Young flushes favored the build-up in psylla population. Minimum temperature and rainfall had highly significant correlation with build-up in population of citrus psylla in all the six tehsils of Sargodha. Although, high temperature also favored the high population of citrus psylla in two tehsils. August and mid-March to April were the two times when population of citrus psylla reached to the peak. Therefore, an integrated management strategy can be formulated with this study that will not only help in reducing the HLB incidence but also increase in citrus production.

scholarly journals “Adonde é o aposento do pescado?”: ecozoneamento do manguezal na pesca artesanal de crustáceos da Reserva Extrativista Marinha da Baía do Iguape, Maragogipe – Bahia

2012 ◽  
Vol 11 (2) ◽  
pp. 143
Author(s):  
Francisco Santos Cousiño Casal ◽  
Francisco José Bezerra Souto
Keyword(s):  
Traditional Knowledge ◽  
River Mouth ◽  
Mangrove Ecosystem ◽  
Spatial Knowledge ◽  
Fishing Community ◽  
Artisanal Fishing ◽  
Structured Interviews ◽  
Ecological Zones ◽  
Fishing Resources ◽  
Guided Tours

Crustaceans, along with molluscs and fish, are the most important fishing resources forsubsistence and income for people in the mangrove ecosystem. In this environment, traditional cultural system recognizeand classify certain ecological areas called ecozones. The aim of this study was to understand how the fishermencharacterize the fishing areas and how this influences the traditional knowledge of the artisanal fishing of crustaceans in themangrove ecosystem. This study was carried out at the Baía de Iguape Marine Extractive Reserve, with the fishingcommunity of Angola. The sample of interviewed was defined from individuals opportunistically found using the criterionof native experts. There were open and semi-structured interviews with 42 fishermen. Techniques of guided tours andparticipatory mapping were also used. The main ecological zones identified by the fishing community of Angola were:“costeiro” (= coastal), “riacho” (= stream or creek), “rio” (= river), “boca de rio” (= river mouth), “enseada” (= creek),“canal” (= waterway), “coroa” (= shoal), “poço” (= well), “ilha” (= island), “ilhote” (= islet), “mangue” (= mangrove) and“terra” (= land). The Angola fishermen have demonstrated a refined spatial knowledge about fishing sites and theirfeatures, relating them to bioecology of fishing resources exploited.

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