The management of snags: A comparison in managed and unmanaged ancient forests of the Southern French Alps

Marage, Damien; Lempérière, Guy

doi:10.1051/forest:2005005

Cited by 54 publications

(43 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result is in contrast with the prominent effect of silvicultural treatments on biodiversity indicators found at the stand scale, both in the Mediterranean (Fabbio et al, 2003; and in other study areas (e.g. Hansen et al, 1991;Green and Peterken, 1997;Marage and Lemperiere, 2005;Deal, 2007). It is widely accepted that management affects key forest characteristics and biodiversity at multiple scales, including spatial pattern and relevant ecological processes (Franklin and Forman, 1987;Turner, 1989;Rescia et al, 2004;Gustafson, 2007), but the direct impacts on Mediterranean biodiversity at the landscape scale have been much less analysed.…”

Section: The Relative Importance Of Landscape and Environmental Factocontrasting

confidence: 49%

Relating landscape structure, environment and management to biodiversity indicators estimated from forest inventory data in Catalonia (NE Spain)

Torras¹,

Martín-Queller²,

Saura³

2009

For. syst.

View full text Add to dashboard Cite

There is an increasing need to develop efficient methods for characterising and monitoring forest biodiversity. A landscape scale approach and assessment can provide complementary and valuable information in this respect, by considering patterns and processes that operate at broad scales and influence different aspects of forest biodiversity. Here we analysed the relationships between six forest biodiversity indicators (related to the tree and shrub layers and estimated from a large set of field plots from the Third Spanish National Forest Inventory) and landscape structure, environmental and management variables at a 10 x 10 km scale in the region of Catalonia (NE Spain) through the variation partitioning method. The tree layer indicators were those most predictable from the set of explanatory variables considered, and up to 77.2 % of total variation was explained for tree species richness. Landscape variables were much more relevant to explain biodiversity patterns than environmental and spatial factors, and landscape composition outperformed the predictive capacity of configuration metrics. Management had a weak but positive effect on the tree layer indicators, while the amount of early successional forest was negatively associated to the tree layer indicators but positively to those of the shrub stratum. Our results highlight the need to (1) concentrate field sampling efforts in those indicators that are less predictable from the landscape scale, such as those related to rare species with a high conservation value, and to (2) incorporate landscape structure variables for forest biodiversity assessments in the Mediterranean, where a landscape management approach may be particularly suited to allow the adaptation of forest biodiversity to the ongoing landscape dynamics related to broad-scale processes such as rural land abandonment or climate change.Key words: forest biodiversity indicators, landscape configuration metrics, silvicultural treatments, variation partitioning. Resumen Efectos de la estructura del paisaje, variables ambientales, y gestión forestal en indicadores de biodiversidad estimados a partir de parcelas de inventario forestal en Cataluña (NE España)Dentro de la creciente necesidad de desarrollar métodos eficientes para caracterizar y monitorizar la biodiversidad forestal, una perspectiva de paisaje puede proporcionar información valiosa y complementaria al considerar patrones y procesos que operan en escalas amplias y que influyen en diferentes aspectos de la biodiversidad de nuestros bosques. Aquí se analizan las relaciones entre seis indicadores de biodiversidad forestal (relacionados con el estrato arbóreo y arbustivo y estimados a partir de un amplio conjunto de parcelas de campo del Tercer Inventario Forestal Nacional) y variables de estructura del paisaje, ambientales y de gestión a una escala de 10 x 10 km en Cataluña (NE España) mediante el método de partición de la variación. Los indicadores del estrato arbóreo resultaron ser los más predecibles mediante el conjunto de variab...

show abstract

Section: The Relative Importance Of Landscape and Environmental Factocontrasting

confidence: 49%

Relating landscape structure, environment and management to biodiversity indicators estimated from forest inventory data in Catalonia (NE Spain)

Torras¹,

Martín-Queller²,

Saura³

2009

For. syst.

View full text Add to dashboard Cite

show abstract

“…tional activities. In this type of forest management, big standing dead trees are preserved because they play a crucial role in maintaining natural diversity and the functioning of forest ecosystems as a wide range of plants and animals have been strongly associated with them (McComb & Lindenmayer 1999, Marage & Lemperiere 2005.…”

Section: Groups Of Touristsmentioning

confidence: 99%

“…According to this definition, the deadwood can be subdivided in two main components with a different ecological role in forest ecosystems (Marage & Lemperiere 2005): standing dead trees (or snags) and lying deadwood (or logs). In addition, deadwood can be classified on the basis of size in coarse woody debris -dead woody materials with a diameter greater than 10 or 12 cm -and fine woody debris that is the dead woody materials with a diameter between 2.5 and 10-12 cm (Densmore et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Tourists’ perception of deadwood in mountain forests

et al. 2016

View full text Add to dashboard Cite

Abstract. In traditional forest management practices, the non-living woody biomass in forests was perceived negatively. Generally, deadwood was removed during the silvicultural treatments to protect forests against fire, pests and insects' attacks. In the last decades, the perception of forest managers regarding forest deadwood is changing. However, people's opinions about the presence of deadwood in forests have been little investigated. In light of this gap, the aim of the paper is to understand tourists' perception and opinions towards deadwood in mountain forests. The survey was carried out in two study areas: the first one in Italy and the second one in Bosnia-Herzegovina. A structured questionnaire was administered to a random sample of visitors (n = 156 in Italy, n = 115 in Bosnia-Herzegovina). Tourists' preferences were evaluated through a set of images characterized by a different amount of standing dead trees and lying deadwood. The collected data were statistically analyzed to highlight the preferred type of forests related to different forms of deadwood management (unmanaged forests, close-to-nature forests, extensively managed forests and intensively managed forests). The results show that both components of deadwood are perceived positively by tourists. More than 60% of respondents prefer unmanaged forests and close-to-nature managed forests, 40% of respondents prefer intensively managed forests in which deadwood is removed during the silvicultural treatments. Concerning the differences between the two study areas, a positive opinion on intensively managed forests was expressed by 40% of respondents in Italy and 22% in Bosnia-Herzegovina. Conversely, in both study areas a similar percentage of respondents preferred unmanaged forests and close-to-nature managed forests (about 40% Genova valley and 44% in Sarajevo Canton).

show abstract

“…Preservation of the adequate sanitary condition of the forest is assured thanks to the removal of dead, dying and decaying trees, which leads to a great impoverishment of nature resources in commercial forests. Moreover, felling in stands is connected with the extraction of large-sized trees, and as such almost completely eliminates the potential for natural emergence of large volumes of dead wood (Marage and Lemperiere, 2005). Ciach (2013) presented an opinion that although at present in commercial forests we may observe considerable volumes of dead wood, they are most typically stumps left after earlier commercial management and small-sized or considerably decomposed trees as a result of natural elimination, or single shelter trees being left in accordance with management plans.…”

Section: Discussionmentioning

confidence: 99%