The Harapan Rainforest in the Indonesian province of Jambi, Sumatra is one of the few effectively... more The Harapan Rainforest in the Indonesian province of Jambi, Sumatra is one of the few effectively protected areas in the lowlands of Sumatra. It is a former logging concession which has been leased for 99 years by the RSPB in collaboration with their Indonesian partner, Burung Indonesia. As part of the lease agreement, the area needs to be managed and re-vegetated by the RSPB. In the past the Royal Botanic Gardens, Kew (RBG Kew) has helped to provide some of the botanical background for this project. The project’s primary purpose was to map the remaining vegetation of the project area, provide input and recommendations for the restoration and carbon capture at the site. Outcomes and activities Within the very short time frame this ambitious project has been a great success with outcomes in science, public outreach and testing of new techniques and technologies. The main activities were: • To map the vegetation of the project area from satellite imagery and fieldwork data • To run a ...
Pultenaea Sm. is the biggest genus within the endemic Australian tribe: Mirbelieae (Leg.). The ea... more Pultenaea Sm. is the biggest genus within the endemic Australian tribe: Mirbelieae (Leg.). The eastern species (c. 80% of the taxa) have been revised, with the support of ABRS, in the last few years at the Centre for Plant Biodiversity Research in Canberra. During this work 12,000 specimens were studied, named and databased. The resulting database enables us to ask a few questions about the collecting history of Pultenaea in the last 200 years.
The current fire adapted vegetation's in South East Asia are generally considered to be man m... more The current fire adapted vegetation's in South East Asia are generally considered to be man made, with no plant species distribution limited to this type of vegetation. However, the wide spread distribution in South east Asia of a small number of so-called pyro-herbs seem to dispute this. Pyro-herbs are woody plants species that survive frequent fires by reducing their woody parts too underground structures and then only sprout herb like branches each year in the wet season. In this way they can avoid the loss of too much biomass during frequent fires that are endemic in some areas. These type of plants are well known from the dryer areas of Africa, South-America and Australia, but have been thought to be absent from South East Asia. Resent work on the Labiatae at RBGKew has revealed that a number of these species do occur in the region. An overview of the literature dealing with pyro-herbs is South East Asia is given and the new discoveries and their implications are discussed.
The genus Premna consists of 14 species in the Flora Malesiana area. The most common species in t... more The genus Premna consists of 14 species in the Flora Malesiana area. The most common species in the region are all widespread. However, a series of morphologically closely-related, rare and generally geographically more restricted species are present in the region. These species can be characterised by three distinct morphological characters: 1) small decussate scales at the base of the young twigs, 2) a calyx that always has four isomorphic lobes, 3) a fruit that is clavoid in shape and almost single-seeded. The ecology and morphology of Premna herbacea Roxb. is unique in the genus and is the first recognised ‘pyro-herb’ in the Flora Malesiana area.
ABSTRACT The flower morphology and pollination biology of the Labiate genera Oxera, Faradaya and ... more ABSTRACT The flower morphology and pollination biology of the Labiate genera Oxera, Faradaya and Hosea are discussed. Possible adaptations in the flower morphology as a reaction to shifts in kinds of pollinators are evaluated using the accepted cladogram for the group.
The Harapan Rainforest in the Indonesian province of Jambi, Sumatra is one of the few effectively... more The Harapan Rainforest in the Indonesian province of Jambi, Sumatra is one of the few effectively protected areas in the lowlands of Sumatra. It is a former logging concession which has been leased for 99 years by the RSPB in collaboration with their Indonesian partner, Burung Indonesia. As part of the lease agreement, the area needs to be managed and re-vegetated by the RSPB. In the past the Royal Botanic Gardens, Kew (RBG Kew) has helped to provide some of the botanical background for this project. The project’s primary purpose was to map the remaining vegetation of the project area, provide input and recommendations for the restoration and carbon capture at the site. Outcomes and activities Within the very short time frame this ambitious project has been a great success with outcomes in science, public outreach and testing of new techniques and technologies. The main activities were: • To map the vegetation of the project area from satellite imagery and fieldwork data • To run a ...
Pultenaea Sm. is the biggest genus within the endemic Australian tribe: Mirbelieae (Leg.). The ea... more Pultenaea Sm. is the biggest genus within the endemic Australian tribe: Mirbelieae (Leg.). The eastern species (c. 80% of the taxa) have been revised, with the support of ABRS, in the last few years at the Centre for Plant Biodiversity Research in Canberra. During this work 12,000 specimens were studied, named and databased. The resulting database enables us to ask a few questions about the collecting history of Pultenaea in the last 200 years.
The current fire adapted vegetation's in South East Asia are generally considered to be man m... more The current fire adapted vegetation's in South East Asia are generally considered to be man made, with no plant species distribution limited to this type of vegetation. However, the wide spread distribution in South east Asia of a small number of so-called pyro-herbs seem to dispute this. Pyro-herbs are woody plants species that survive frequent fires by reducing their woody parts too underground structures and then only sprout herb like branches each year in the wet season. In this way they can avoid the loss of too much biomass during frequent fires that are endemic in some areas. These type of plants are well known from the dryer areas of Africa, South-America and Australia, but have been thought to be absent from South East Asia. Resent work on the Labiatae at RBGKew has revealed that a number of these species do occur in the region. An overview of the literature dealing with pyro-herbs is South East Asia is given and the new discoveries and their implications are discussed.
The genus Premna consists of 14 species in the Flora Malesiana area. The most common species in t... more The genus Premna consists of 14 species in the Flora Malesiana area. The most common species in the region are all widespread. However, a series of morphologically closely-related, rare and generally geographically more restricted species are present in the region. These species can be characterised by three distinct morphological characters: 1) small decussate scales at the base of the young twigs, 2) a calyx that always has four isomorphic lobes, 3) a fruit that is clavoid in shape and almost single-seeded. The ecology and morphology of Premna herbacea Roxb. is unique in the genus and is the first recognised ‘pyro-herb’ in the Flora Malesiana area.
ABSTRACT The flower morphology and pollination biology of the Labiate genera Oxera, Faradaya and ... more ABSTRACT The flower morphology and pollination biology of the Labiate genera Oxera, Faradaya and Hosea are discussed. Possible adaptations in the flower morphology as a reaction to shifts in kinds of pollinators are evaluated using the accepted cladogram for the group.
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Papers by Rogier R P de Kok