Slow Recovery of Defoliated Seven-Weeks FernRumohra adiantiformisin Harkerville Forest

Milton, Suzanne J.

doi:10.1080/00382167.1991.9630370

Cited by 7 publications

(6 citation statements)

References 5 publications

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“…In Brazilian natural populations, fronds are also very long-lived (Anama, 2002;Conte et al 2000), but despite this fact they can recover rapidly. Additionally, the higher harvest rates applied to Brazilian populations as compared with the rates employed in South Africa could cause reductions in frond production, as reported by Milton (1991), but such reductions do not occur in Brazil (at least not when the traditional management system is employed). Geldenhuys and Van der Merwe (1988) point out that frond production in South Africa appears to be nutrient limited, and frond removal also reduces nutrient availability.…”

Section: Discussionmentioning

confidence: 85%

“…Since the emergence of new fronds shows a positive correlation with rainfall, this could be an explanation for the differences found. Milton (1991) attributes the slow recovery in South African populations in part to long leaf longevity in this species. In Brazilian natural populations, fronds are also very long-lived (Anama, 2002;Conte et al 2000), but despite this fact they can recover rapidly.…”

Section: Discussionmentioning

confidence: 97%

“…According to Milton (1991), a period of five years is insufficient for R. adiantiformis, under natural conditions in the indigenous forests of the southern Cape, to recover from total or partial defoliation. In these forests, only 50% of all pickable fronds per plant may be harvested and the harvesting cycle was extended to 15 months to give plants sufficient time to recover (Geldenhuys and Van der Merwe, 1994).…”

Section: Discussionmentioning

confidence: 99%

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Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Baldauf¹,

Reis²

2010

American Fern Journal

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

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Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Baldauf¹,

Reis²

2010

American Fern Journal

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“…With an industry dependent on the R. adiantiformis resource, research into the impact of frond harvesting was a priority. Experimental harvesting at different intensities and frequencies was subsequently initiated (Geldenhuys & Van der Merwe 1986Milton 1987aMilton , 1987bMilton , 1991Milton & Moll 1987).…”

Section: Impact Of Harvestingmentioning

confidence: 99%

Applying adaptive management in resource use in South African National Parks: A case study approach

Scheepers

Swemmer

Vermeulen

2011

Koedoe

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South African National Parks (SANParks) has a history of formal and informal natural resource use that is characterised by polarised views on national conservation interests and benefits to communities. Current efforts aim to determine the sustainability of existing resource use in parks and to formalise these activities through the development of resource use protocols. The resource use policy of SANParks outlines principles for sustainable resource use, including greater involvement of local communities in management of protected areas and an adaptive management approach to determining sustainable use levels. This paper examines three case studies on plant use in national parks with regard to the development of criteria and indicators for monitoring resource use, and the role of thresholds of potential concern in measuring effectiveness of managing for sustainable use levels. Opportunities and challenges for resource use management are identified. Findings show that platforms for discussion and knowledge sharing, including research committees and community associations, are critical to building relationships, trust and a shared vision of sustainable resource use between stakeholders. However, additional capacity building is needed to enable local community structures to manage internal social conflicts and jealousy, and to participate fully in monitoring efforts. Long-term monitoring is essential for developing flexible harvest prescriptions for plant use, but this is a time-consuming and resource-intensive exercise. Flexible management strategies are difficult to implement and sometimes command-and-control measures are necessary to protect rare or endangered species. A holistic approach that considers resource use in national parks as a complement to broader community development initiatives offers a way forward.Conservation implications: There is no blueprint for the development of sustainable resource use systems and resource use is often addressed according to multiple approaches in national parks. However, the SANParks resource use policy provides a necessary set of guiding principles for resource use management across the national park system that allows for monitoring progress.How to cite this article: Scheepers, K., Swemmer, L. & Vermeulen, W.J., 2011, ‘Applying adaptive management in resource use in South African National Parks: A case study approach’, Koedoe 53(2), Art. #999, 14 pages. doi:10.4102/koedoe.v53i2.999

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“…Ching) is produced for floral use in many regions throughout the world (Stamps, 1992). In some regions, leaves are gathered from indigenous forest ecosystems where the fern occurs naturally and is a protected species (Geldenhuys & van der Merwe, 1988;Milton, 1987aMilton, , 1991Milton & Moll, 1988). In Florida, 2860 ha of fern were grown in 2001; the estimated annual wholesale value was over $52 million (Anon., 2001).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations in production and development of leather leaf fern leaves¹

Strandberg

2003

Annals of Applied Biology

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Production and development of leatherleaf fern leaves were studied using containerised plants growing in a shade house. Leaf development was partitioned into seven arbitrary development stages; the time needed for leaves to progress through each developmental stage was used to measure days required to reach maturity. Measurements were made twice each week throughout 1997. Means and variances within emergence rates of new leaves and time needed for new leaves to pass through six leaf development stages were calculated for 26 14-day periods throughout the year and compared with degree days, solar radiation, soil temperature, and daylight hours accumulated during the periods. Leaf production rates ranged from 0.15-0.73 leaves day -1 plant -1 . The average time from emergence to maturity was 22.6 days. Both leaf production and development rates varied greatly with the seasons, and were strongly associated with the weather variables measured, but significant cyclic rate fluctuations unrelated to weather were also detected. Leaf emergence rates were more strongly related to average soil temperature, whereas leaf development rates to maturity were more strongly related to solar radiation and degree days.

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Slow Recovery of Defoliated Seven-Weeks FernRumohra adiantiformisin Harkerville Forest

Cited by 7 publications

References 5 publications

Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Applying adaptive management in resource use in South African National Parks: A case study approach

Seasonal variations in production and development of leather leaf fern leaves¹

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Slow Recovery of Defoliated Seven-Weeks FernRumohra adiantiformisin Harkerville Forest

Cited by 7 publications

References 5 publications

Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Effects of Harvesting on Population Structure of Leatherleaf Fern (Rumohra adiantiformis (G. Forst.) Ching) in Brazilian Atlantic Rainforest

Applying adaptive management in resource use in South African National Parks: A case study approach

Seasonal variations in production and development of leather leaf fern leaves1

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Seasonal variations in production and development of leather leaf fern leaves¹