A comparison of the history and present state of an<i>Alnus glutinosa</i>and a<i>Betula pubescens</i>dominated patch of wetland forest in the nature reserve ‘Het Molenven‘, The Netherlands

Brock, T.C.M.; Jongerhuis, R.; Molen, P.C. van der; Ran, E.Th.H.

doi:10.1111/j.1438-8677.1989.tb01374.x

Cited by 9 publications

(8 citation statements)

References 6 publications

(12 reference statements)

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“…We conclude that these silting processes resulted in a rise in the groundwater table and consequent dieback of the A. glutinosa trees. In accordance with our study, Brock et al (1989) and Stančík (1999) recorded a similar dieback of alder carr, caused by changes in the soil moisture regime over time, due to regulation of water level by means of drainage channels. Several other studies have reported that a rise in water level was an important reason for A. glutinosa dieback.…”

Section: Vegetation Changes and Successional Trendssupporting

confidence: 91%

“…Both autogenic drivers (Pokorný et al, 2000;Tucker and Fitter, 1981) and various external factors, such as the fluctuation of the groundwater table (Brock et al, 1989;Janssen et al, 1995), the effect of windthrows (Wolf et al, 2004) and the impact of pathogens (Cech, 1998) have been reported as important for the dynamics of alder carr. Moreover, large-scale diebacks (i.e., extensive mortalities of trees or whole stands) are said to be characteristic for alder carr (Pokorný et al, 2000;Tucker and Fitter, 1981).…”

Section: Introductionmentioning

confidence: 99%

“…Brock et al (1989) and Stančík (1999) discussed the influence of groundwater level increase on alder carr dynamics as a result of the silting of unused drainage channels. Nevertheless, the extent of this impact on vegetation dynamics of alder carr remains unclear.…”

Section: Introductionmentioning

confidence: 99%

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Development of alder carr after the abandonment of wet grasslands during the last 70 years

et al. 2009

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Keywords:aerial photograph / Alnus glutinosa (L.) Gaertn. / dendrochronology / land abandonment / secondary succession / wetland Abstract • The secondary succession of wet grasslands to communities of alder carr dominated by Alnus glutinosa was recorded in different parts of Europe during the 20th century. However, knowledge of such development of alder carr remains insufficient.• The development of alder carr was reconstructed at five sites in the Czech Republic, using historical aerial photographs and methods of dendrochronology. The aims were to investigate the succession from wet grasslands to alder carr at sites previously intensively managed for agriculture and to find out the role of fluctuations in the groundwater table, caused by artificial drainage channels, in the observed stand dynamics and tree growth.• The spread of forest (i.e., an increase in forest cover) predominated until the 1970s at all sites. This trend was disrupted by a large-scale dieback of forest stands in four of the five sites after the 1970s, followed by an increase in patch heterogeneity, as indicated by landscape metrics. The radial growth increment in Alnus glutinosa has been affected predominately by local environmental factors, probably including the changing degree of waterlogging. Forest dieback was presumably connected with a lesser extent of drainage channels.• Our results indicate that observed successional pathways at sites of alder carr were probably caused by local changes in the groundwater table.Mots-clés : photographie aérienne / Alnus glutinosa (L.) Gaertn. / dendrochronologie / abandon des terres / succession secondaire / zones humides Résumé -Développement de taillis d'aunes après l'abandon des prairies humides au cours des 70 dernières années.• La succession secondaire des prairies humides en communautés de taillis d'aunes dominées par Alnus glutinosa a été enregistrée dans différentes parties de l'Europe au cours du 20 e siècle. Toutefois, la connaissance du développement de taillis d'aunes reste insuffisante.• Le développement de taillis d'aunes a été reconstruit dans cinq sites en République Tchèque, à l'aide de photographies aériennes historiques et des méthodologies de la dendrochronologie. Les objectifs étaient d'étudier la succession de prairies humides en taillis d'aunes sur des sites précédem-ment exploités intensivement par l'agriculture et de découvrir le rôle des fluctuations de la nappe phréatique, causées par le drainage artificiel des canaux, et d'observer la dynamique des peuplements et la croissance des arbres.• La progression de la forêt (c'est-à-dire, l'augmentation du couvert forestier) a prédominé jusque dans les années 1970 dans tous les sites. Cette tendance a été perturbée par un vaste dépérissement des peuplements forestiers dans quatre des cinq sites après les années 1970, suivie par une augmentation de l'hétérogénéité des bouquets d'arbres, comme indiqué par les paramètres du paysage. L'augmentation de la croissance radiale de Alnus glutinosa a été affectée principalement par les facteu...

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Section: Vegetation Changes and Successional Trendssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Development of alder carr after the abandonment of wet grasslands during the last 70 years

et al. 2009

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“…Unlike other types of alluvial forests, rather little attention has been paid to the structure and development of alder stands so far, although they are highly endangered in Europe (Ellenberg, 1996). Both autogenous influences (Pokorný et al, 2000) and various external factors, such as water-table fluctuations (Brock et al, 1989), the effect of wind disturbances (Wolf et al, 2004) and pathogens (Cech, 1998), have been described as important for the dynamics of alder stands. For example, the negative impact of ivy (Hedera helix L.) on the radial growth and on some anatomical char-acteristics of black alder wood was shown by Yaman (2009).…”

Section: Introductionmentioning

confidence: 99%

“…For example, Brock et al (1989) and Douda et al (2009) mentioned the negative effect of increased watertable in black alder stands on their dynamics as a consequence of drainage ditches clogging. The health status of black alder stands is considerably affected by decreasing watertable and periods of low total precipitation (Rodríguez-González et al, 2014) as well as by fungal pathogens (Worrall et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Structural diversity and production of alder stands on former agricultural land at high altitudes

Vacek¹,

Vacek²,

Podrázský³

et al. 2016

Dendrobiology

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Abstract:The paper deals with the structural diversity and production of a less frequently studied type of alder stands originated on former agricultural lands in the 1950s, established partly by plantation and partly by natural succession in the area of the Krkonoše Mts. and the Orlické hory Mts. (Czech Republic). Four permanent research plots (PRP) were established at sites where Black alder (Alnus glutinosa L. Gaertn.) and Grey alder (Alnus incana L. Moench.) naturally occurs, each plot of 0.25 ha in size. The aim of the study was to evaluate the structure and development of the alder stands with respect to biodiversity, horizontal, vertical and species structure, diameter increment with emphasis on climate factors, and the quantity and quality of timber production. The results document low diversification of the studied stands in the PRPs. The horizontal structure is defined as random and clumped at sites at the highest altitude with high water table. The number of living trees with DBH ≥ 4 cm ranges between 556 to 828 trees ha -1 with the relative stand density index (SDI) 0.67-0.77. The stand volume ranges from 247 to 393 m 3 ha -1, and decreases with higher altitudes. Low temperatures is limiting factor for radial growth in the high mountain areas, respectively low precipitation in the middle lands. Owing to a rather specific site character, as especially the spring area, the stands exhibit only average production, but the production quality is generally high. The quality timber is suitable for industrial use; the rot-affected trunk base parts usable for fuel represent only approximately 16%.

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Late holocene history and vegetation dynamics of a floodplain alder carr: A case study from eastern Bohemia, Czech Republic

2000

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A comparison of the history and present state of anAlnus glutinosaand aBetula pubescensdominated patch of wetland forest in the nature reserve ‘Het Molenven‘, The Netherlands

Cited by 9 publications

References 6 publications

Development of alder carr after the abandonment of wet grasslands during the last 70 years

Development of alder carr after the abandonment of wet grasslands during the last 70 years

Structural diversity and production of alder stands on former agricultural land at high altitudes

Late holocene history and vegetation dynamics of a floodplain alder carr: A case study from eastern Bohemia, Czech Republic

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