It is accessible to non-experts and delivers scientifically robust results. You must submit your evidence to your local Forestry Commission … Forests provide society with a wide range of benefits, from reliable flows of clean water to productive soil and carbon sequestration. Springer, Berlin, pp 117–209, Pretzsch H, Forrester DI, Bauhus J (eds) (2017) Mixed-species forests—ecology and management. Even minor chronic damage such as background defoliation (Kozlov et al. Planted forests that consist of one tree species, grown as even-aged monocultures and intensively managed, may result in reduced diversity and abundance of pollinators compared with natural forests that have greater structural and plant species diversity (Taki et al. Healthy forest ecosystems are ecological life-support systems. 2006, 2007). Enhancing forest biodiversity and delivering multiple services in a balanced way is one of the main objectives of the EU Forest Strategy. 2004), as do hen harriers (Circus cyaneus), since such habitats provide suitable ground nesting sites and an abundance of small mammalian prey (Wilson et al. Biodivers Conserv 26, 3005–3035 (2017). 2017; O’Callaghan et al. In this sense, forest biodiversity is often overlooked, unless one considers the clearance of trees and shrubs in the lower forest strata to mitigate fire risk as a strategy that influences biodiversity. Habitat provisioning by forests for multiple taxa and trophic levels is a key ecosystem service, which in turn positively influences forest ecosystem functioning through a range of mechanisms (Barnes et al. Fosseway Business Centre, Moreton-in-Marsh. Ecology 93:2115–2124, Castagneyrol B, Jactel H, Vacher C, Brockerhoff EG, Koricheva J (2014a) Effects of plant phylogenetic diversity on herbivory depend on herbivore specialization. They are often invisible and therefore mostly taken for granted. Oikos 91: 175–83. 2013; Bourdier et al. However, biodiversity in these forests also contributes a cultural ecosystem ‘disservice’ as local people have a fear of roaming wolves (Plieninger et al. Ecol Lett 16:584–599, Kirby KR, Potvin C (2007) Variation in carbon storage among tree species: implications for the management of a small-scale carbon sink project. 2017; Lindenmayer 2017). https://www.actu-environnement.com/media/pdf/news-26331-synthese-ipbes-decideurs-pollinisateurs.pdf, Pretzsch H, Forrester DI (2017) Stand dynamics of mixed-species stands compared with monocultures. Nature 448:188–190. 2015). Many of these processes or interactions are related to stand structure or tree architecture, rather than tree species diversity per se. One widely-cited study calculated the value of the world’s ecosystems at $33 trillion per year (Costanza et al. Island Press, Washington, Lindenmayer D, Blanchard W, Tennant P, Barton P, Ikin K, Mortelliti A, Okada S, Crane M, Michael D (2015) Richness is not all: how changes in avian functional diversity reflect major landscape modification caused by pine plantations. Ecosyst Serv 27:92–102, Lyver PO’B, Timoti P, Jones CJ, Richardson SJ, Tahi BL, Greenhalgh S (2017b) An indigenous community-based monitoring system for assessing forest health in New Zealand. Ecosystems and Human Well-being – A Manual for Assessment Practitioners A practical guide for undertaking ecosystem assessments. 2013; Lange et al. Int J Biodivers Sci Ecosyst Serv Manag 12:24–38. A farmed forest. General Technical Report SRS-54, USDA Forest Service, Asheville, NC, Wehncke EV, Dominguez CA (2007) Seed dispersal Ecol of non-restricted frugivores capuchin monkeys in three neotropical forests. 2016). It should also consider the response of the tree species to such fire regimes, according to their functional traits, and in the case of mixtures, the compatibility between species and traits. If soil nitrogen availability is high then any nitrogen fixed by a nitrogen-fixing species is unlikely to have much of an effect on non-nitrogen-fixing species (Forrester 2014). Focusing on function allows scientists to understand how changes in forest biodiversity can modify the key ecological processes that are driving the functioning, integrity or maintenance of forest ecosystems. Supporting services, the fourth category in the U.S.A., 105(28): 9483-9488. Google Scholar, Brockerhoff EG, Liebhold AM (2017) Ecology of forest insect invasions. Divers Distrib 21:836–847, Linnell MA, Davis RJ, Lesmeister DB, Swingle JK (2017) Conservation and relative habitat suitability for an arboreal mammal associated with old forest. These services are often intangible, making them difficult to measure (Daniel et al. Ecol Lett 10:835–848, Jactel H, Brockerhoff E, Duelli P (2005) A test of the biodiversity-stability theory: Meta-analysis of tree species diversity effects on insect pest infestations, and re-examination of responsible factors. Article In conclusion, the use of forest diversity as a means for fire mitigation and/or regulation needs to consider the spatial nature of fire. Our review confirms that forest type and tree species richness affect forest biodiversity and that forest diversity can be an important factor in ecosystem function and the provision of ecosystem services. Scale-dependent effects of tree diversity on avian predation of artificial larvae. Whereas “function” is an ecosystem-centred concept, “ecosystem service” is human-centred (see Box 1 for definitions and an example). Although it is a common belief among foresters that forest monocultures are more susceptible to pest outbreaks and insect invasions than mixed forests, it has only recently been demonstrated, via meta-analyses, that tree species grown in pure stands are, on average, significantly more affected by insect herbivory than the same species grown in mixed stands (Jactel and Brockerhoff 2007; Castagneyrol et al. In monocultures that are vital to human health and livelihood, natural assets we ecosystem! Ecosystem functioning and the provision of benefits to humanity, it nevertheless attracted attention... Finally, trade-offs between ecosystem services seed passage through vertebrate frugivores ’ guts germination! Can provide ( Brandon, 2014 ) the ecology and silviculture of mixed-species stands so as to productivity... Biodiversity most severely EU contains about 5 % of the world ’ s economic health, with forest. 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