Field occupancy by breeding lapwings Vanellus vanellus and redshanks Tringa totanus in agricultural wet grasslands

Durant, Daphné; Tichit, Muriel; Fritz, Hervé; Kernéïs, Éric

doi:10.1016/j.agee.2008.05.013

Cited by 20 publications

(19 citation statements)

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“…It was necessary to fine-tune the grazing intensity over time to ensure the conservation of several bird species. The tuning involved temporal shifts in grazing sequences to minimise nest trampling and create optimal grass heights for bird survival (Tichit et al, 2005a and2005b;Durant et al, 2008). The temporal shifts were action levers in the trade-off between the ES, because they improved bird conservation without causing major loss of fodder production.…”

Section: An Inventory Of the Es Provided By Plfs In Europementioning

confidence: 99%

Applying the ecosystem services framework to pasture-based livestock farming systems in Europe

Rodríguez-Ortega

Oteros‐Rozas

Ripoll-Bosch

et al. 2014

Animal

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122

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The concept of 'Ecosystem Services' (ES) focuses on the linkages between ecosystems, including agroecosystems, and human well-being, referring to all the benefits, direct and indirect, that people obtain from ecosystems. In this paper, we review the application of the ES framework to pasture-based livestock farming systems, which allows (1) regulating, supporting and cultural ES to be integrated at the same level with provisioning ES, and (2) the multiple trade-offs and synergies that exist among ES to be considered. Research on livestock farming has focused mostly on provisioning ES (meat, milk and fibre production), despite the fact that provisioning ES strongly depends on regulating and supporting ES for their existence. We first present an inventory of the non-provisioning ES (regulating, supporting and cultural) provided by pasture-based livestock systems in Europe. Next, we review the trade-offs between provisioning and non-provisioning ES at multiple scales and present an overview of the methodologies for assessing biophysical trade-offs. Third, we present non-biophysical (economical and socio-cultural) methodologies and applications for ES valuation. We conclude with some recommendations for policy design.

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Section: An Inventory Of the Es Provided By Plfs In Europementioning

confidence: 99%

Applying the ecosystem services framework to pasture-based livestock farming systems in Europe

Rodríguez-Ortega

Oteros‐Rozas

Ripoll-Bosch

et al. 2014

Animal

Self Cite

122

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“…Then we performed a sensitivity analysis to verify the generality of our results under a wider range of ecological constraints and initial conditions ( u b = [0, 0.5, 1, 1.5, 2]; u # = [1, 1.5, 2, 3, 4, 5]; f b = [3.2, 2.5, 1.9, 1.5, 1.1]; h b = [0, 5, 7, 10, 12, 13, 14]; h # = [10, 12, 14, 17, 20, 30]; N(t 0 ) = [25, 30, 35] ). Constraint values were chosen to explore the range of possible states and controls observed in our study area on lapwing nesting fields (0≤h≤30 and 0≤u≤5; [18]). As f(u) is a monotonous function of u , values of f b were thus chosen to correspond to the different thresholds on u # .…”

Section: Methodsmentioning

confidence: 99%

Action versus Result-Oriented Schemes in a Grassland Agroecosystem: A Dynamic Modelling Approach

2012

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Effects of agri-environment schemes (AES) on biodiversity remain controversial. While most AES are action-oriented, result-oriented and habitat-oriented schemes have recently been proposed as a solution to improve AES efficiency. The objective of this study was to compare action-oriented, habitat-oriented and result-oriented schemes in terms of ecological and productive performance as well as in terms of management flexibility. We developed a dynamic modelling approach based on the viable control framework to carry out a long term assessment of the three schemes in a grassland agroecosystem. The model explicitly links grazed grassland dynamics to bird population dynamics. It is applied to lapwing conservation in wet grasslands in France. We ran the model to assess the three AES scenarios. The model revealed the grazing strategies respecting ecological and productive constraints specific to each scheme. Grazing strategies were assessed by both their ecological and productive performance. The viable control approach made it possible to obtain the whole set of viable grazing strategies and therefore to quantify the management flexibility of the grassland agroecosystem. Our results showed that habitat and result-oriented scenarios led to much higher ecological performance than the action-oriented one. Differences in both ecological and productive performance between the habitat and result-oriented scenarios were limited. Flexibility of the grassland agroecosystem in the result-oriented scenario was much higher than in that of habitat-oriented scenario. Our model confirms the higher flexibility as well as the better ecological and productive performance of result-oriented schemes. A larger use of result-oriented schemes in conservation may also allow farmers to adapt their management to local conditions and to climatic variations.

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“…First, lapwings are more favoured than redshanks by the cumulated effects of grazing (Tichit et al, 2005;Durant et al, 2008a); second, they respond to grazing in interaction with the quality of their environment, notably field wetness (Milsom et al, 2000;Durant et al, 2008a) and finally they have stricter habitat requirements than redshanks (Durant et al, 2008b). It is thus easier to predict their presence/ absence from variables based either on management or management and habitat.…”

Section: Discussionmentioning

confidence: 99%

“…mid spring). See Durant et al (2008a) for a comprehensive description of the whole data set and observational design.…”

Section: Datamentioning

confidence: 99%

A methodological approach to identify cheap and accurate indicators for biodiversity assessment: application to grazing management and two grassland bird species

Tichit

Barbottin

Makowski

2010

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In response to environmental threats, numerous indicators have been developed to assess the impact of livestock farming systems on the environment. Some of them, notably those based on management practices have been reported to have low accuracy. This paper reports the results of a study aimed at assessing whether accuracy can be increased at a reasonable cost by mixing individual indicators into models. We focused on proxy indicators representing an alternative to the direct impact measurement on two grassland bird species, the lapwing Vanellus vanellus and the redshank Tringa totanus. Models were developed using stepwise selection procedures or Bayesian model averaging (BMA). Sensitivity, specificity, and probability of correctly ranking fields (area under the curve, AUC) were estimated for each individual indicator or model from observational data measured on 252 grazed plots during 2 years. The cost of implementation of each model was computed as a function of the number and types of input variables. Among all management indicators, 50% had an AUC lower than or equal to 0.50 and thus were not better than a random decision. Independently of the statistical procedure, models combining management indicators were always more accurate than individual indicators for lapwings only. In redshanks, models based either on BMA or some selection procedures were non-informative. Higher accuracy could be reached, for both species, with model mixing management and habitat indicators. However, this increase in accuracy was also associated with an increase in model cost. Models derived by BMA were more expensive and slightly less accurate than those derived with selection procedures. Analysing trade-offs between accuracy and cost of indicators opens promising application perspectives as time consuming and expensive indicators are likely to be of low practical utility.Keywords: livestock farming system, Bayesian model averaging, model selection, sensitivity, specificity ImplicationIndicator accuracy is of particular concern when indicators are developed for decision-making purpose. One way to improve the accuracy of individual indicators is to combine several ones using logistic regression. Our results show that special attention should be paid to model selection procedure. Models derived without selection were more expensive and slightly less accurate than those derived using a selection procedure. Analysing trade-offs between accuracy and cost of indicators opens promising perspectives as time consuming and expensive indicators are likely to be of low practical utility.

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Field occupancy by breeding lapwings Vanellus vanellus and redshanks Tringa totanus in agricultural wet grasslands

Cited by 20 publications

References 11 publications

Applying the ecosystem services framework to pasture-based livestock farming systems in Europe

Applying the ecosystem services framework to pasture-based livestock farming systems in Europe

Action versus Result-Oriented Schemes in a Grassland Agroecosystem: A Dynamic Modelling Approach

A methodological approach to identify cheap and accurate indicators for biodiversity assessment: application to grazing management and two grassland bird species

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