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4. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences

Author

Wijedasa, LS, Jauhiainen, J, Kononen, M, Lampela, M, Vasander, H, Leblanc, MC, Evers, S, Smith, TEL, Yule, CM, Varkkey, H, Lupascu, M, Parish, F, Singleton, I, Clements, GR, Aziz, SA, Harrison, ME, Cheyne, S, Anshari, GZ, Meijaard, E, Goldstein, JE, Waldron, S, Hergoualc'h, K, Dommain, R, Frolking, S, Evans, CD, Posa, MRC, Glaser, PH, Suryadiputra, N, Lubis, R, Santika, T, Padfield, R, Kurnianto, S, Hadisiswoyo, P, Lim, TW, Page, SE, Gauci, V, Van der Meer, PJ, Buckland, H, Garnier, F, Samuel, MK, Choo, LNLK, O'Reilly, P, Warren, M, Suksuwan, S, Sumarga, E, Jain, A, Laurance, WF, Couwenberg, J, Joosten, H, Vernimmen, R, Hooijer, A, Malins, C, Cochrane, MA, Perumal, B, Siegert, F, Peh, KSH, Corneau, LP, Verchot, L, Harvey, CF, Cobb, A, Jaafar, Z, Wosten, H, Manuri, S, Muller, M, Giesen, W, Phelps, J, Yong, DL, Silvius, M, Wedeux, BMM, Hoyt, A, Osaki, M, Hirano, T, Takahashi, H, Kohyama, TS, Haraguchi, A, Nugroho, NP, Coomes, DA, Quoi, LP, Dohong, A, Gunawan, H, Gaveau, DLA, Langner, A, Lim, FKS, Edwards, DP, Giam, X, Van der Werf, G, Carmenta, R, Verwer, CC, Gibson, L, Grandois, L, Graham, LLB, Regalino, J, Wich, SA, Rieley, J, Kettridge, N, Brown, C, Pirard, R, Moore, S, Capilla, BR, Ballhorn, U, Ho, HC, Hoscilo, A, Lohberger, S, Evans, TA, Yulianti, N, Blackham, G, Onrizal, Husson, S, Murdiyarso, D, Pangala, S, Cole, LES, Tacconi, L, Segah, H, Tonoto, P, Lee, JSH, Schmilewski, G, Wulffraat, S, Putra, EI, Cattau, ME, Clymo, RS, Morrison, R, Mujahid, A, Miettinen, J, Liew, SC, Valpola, S, Wilson, D, D'Arcy, L, Gerding, M, Sundari, S, Thornton, SA, Kalisz, B, Chapman, SJ, Su, ASM, Basuki, I, Itoh, M, Traeholt, C, Sloan, S, Sayok, AK, Andersen, R, Wijedasa, LS, Jauhiainen, J, Kononen, M, Lampela, M, Vasander, H, Leblanc, MC, Evers, S, Smith, TEL, Yule, CM, Varkkey, H, Lupascu, M, Parish, F, Singleton, I, Clements, GR, Aziz, SA, Harrison, ME, Cheyne, S, Anshari, GZ, Meijaard, E, Goldstein, JE, Waldron, S, Hergoualc'h, K, Dommain, R, Frolking, S, Evans, CD, Posa, MRC, Glaser, PH, Suryadiputra, N, Lubis, R, Santika, T, Padfield, R, Kurnianto, S, Hadisiswoyo, P, Lim, TW, Page, SE, Gauci, V, Van der Meer, PJ, Buckland, H, Garnier, F, Samuel, MK, Choo, LNLK, O'Reilly, P, Warren, M, Suksuwan, S, Sumarga, E, Jain, A, Laurance, WF, Couwenberg, J, Joosten, H, Vernimmen, R, Hooijer, A, Malins, C, Cochrane, MA, Perumal, B, Siegert, F, Peh, KSH, Corneau, LP, Verchot, L, Harvey, CF, Cobb, A, Jaafar, Z, Wosten, H, Manuri, S, Muller, M, Giesen, W, Phelps, J, Yong, DL, Silvius, M, Wedeux, BMM, Hoyt, A, Osaki, M, Hirano, T, Takahashi, H, Kohyama, TS, Haraguchi, A, Nugroho, NP, Coomes, DA, Quoi, LP, Dohong, A, Gunawan, H, Gaveau, DLA, Langner, A, Lim, FKS, Edwards, DP, Giam, X, Van der Werf, G, Carmenta, R, Verwer, CC, Gibson, L, Grandois, L, Graham, LLB, Regalino, J, Wich, SA, Rieley, J, Kettridge, N, Brown, C, Pirard, R, Moore, S, Capilla, BR, Ballhorn, U, Ho, HC, Hoscilo, A, Lohberger, S, Evans, TA, Yulianti, N, Blackham, G, Onrizal, Husson, S, Murdiyarso, D, Pangala, S, Cole, LES, Tacconi, L, Segah, H, Tonoto, P, Lee, JSH, Schmilewski, G, Wulffraat, S, Putra, EI, Cattau, ME, Clymo, RS, Morrison, R, Mujahid, A, Miettinen, J, Liew, SC, Valpola, S, Wilson, D, D'Arcy, L, Gerding, M, Sundari, S, Thornton, SA, Kalisz, B, Chapman, SJ, Su, ASM, Basuki, I, Itoh, M, Traeholt, C, Sloan, S, Sayok, AK, and Andersen, R

Abstract

Letter

Published
2017

6. Important keys to successful restoration of characteristic aquatic macroinvertebrate fauna of raised bogs

Author

Duinen, G.A. van, Brock, A.M.T., Kuper, J.T., Peeters, T.M.J., Smits, M.J.A., Verberk, W.C.E.P., Esselink, J., Schmilewski, G., Rochefort, L., Schmilewski, G., and Rochefort, L.

Subjects
Animal Ecology and Physiology, Environmental Sciences
Abstract

Contains fulltext : 176145.pdf (Publisher’s version ) (Open Access) Pärnu 2002 Peat in Horticulture Symposium – IPS Commision V: Peatland restoration

Published
2002

7. Species richness in a species poor system: aquatic macroinvertebrates of Nigula raba, an intact raised bog system in Estonia

Author

Smits, M.J.A., Duinen, G.A. van, Bosman, G.J.C.G.M., Brock, A.M.T., Javois, J., Kuper, J.T., Peeters, T.M.J., Esselink, J., Schmilewski, G., Rochefort, L., Schmilewski, G., and Rochefort, L.

Subjects
Animal Ecology and Physiology
Abstract

Item does not contain fulltext International Peat Symposium on Peat in Horticulture—Quality and Environmental Challenges. P¨arnu, Estonia, September 3–6. International Peat Society, Jyv ¨askyl ¨ a, Finlan

Published
2002

8. Control mechanisms of clays and their specific surface area in growing media – assessment of clay properties and their parametrization for the optimization of plant quality

Author

Dultz, S., Schellhorn, M., Schmilewski, G., Schenk, M., Dombrowski, I., Schmidt, E., Walsch, J., and Below, M.

Abstract

The addition of clay to growing media aims at constant supply of potassium, phosphorus and micro nutrients, pH-buffering, improvement of rewettability, and cohesion of growing media. The identification of suitable clays and their classification is a prerequisite for product and cultivation safety. A range of different clays highly variable in their mineral parameters were selected for experiments on nutrient buffering (P) and Mn toxicity, their ability to improve the rewettability and binding capacity of growing media. From batch experiments and growth trials it was derived that a threshold value for the sum of exchangeable and easy reducible Mn in clays for growing media is not justified, as even very high Mn contents in clay were not phytotoxic. The P binding capacity of clays was strongly correlated with the oxalate extractable Fe and Al content. A newly developed capillary rise method (WOK) was used to characterize the rewettability of growing media. The speed of rewetting mainly depends on the fineness of the amended clay. Surface free energy (SFE) data of the growing media indicate that those with a good rewettability show also high values for SFE. Compared to the kaolinitic and illitic clay amendments, bentonites show no significant increase in the SFE. Surfaces of clay minerals exhibiting originally polar and hydrophilic surfaces, can render hydrophobic when coated with weakly or non-polar organic matter moieties. Dissolved organic carbon (DOC) sorption was found to be positively correlated with the specific surface area (SSA), cation exchange capacity (CEC) and amount of dithionite extractable Al and Fe. Clays containing expandable clay minerals with high CEC and SSA (e.g. smectites) and those rich in Al- and Fe-oxides seem to be less effective for improving rewettability, whereas an addition of non-expandable clays with lower SSA, CEC (e. g. kaolinitic and illitic clays) and amorphous oxide content appears more promising. New insights on the adsorption of DOM on clay mineral`s surfaces will be obtained in the third year by chemical analysis of the surface with X- ray photoelectron spectroscopy (XPS), surface topography analysis and contact angle measurements. A new method for the determination of the binding capacity of clays in blocking media is currently being tested and will be studied together with determinations on K-dynamics.

Published
2010
Full Text
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11. Species richness in a species poor system: aquatic macroinvertebrates of Nigula raba, an intact raised bog system in Estonia

Author

Schmilewski, G., Rochefort, L., Smits, M.J.A., Duinen, G.A. van, Bosman, G.J.C.G.M., Brock, A.M.T., Javois, J., Kuper, J.T., Peeters, T.M.J., Esselink, J., Schmilewski, G., Rochefort, L., Smits, M.J.A., Duinen, G.A. van, Bosman, G.J.C.G.M., Brock, A.M.T., Javois, J., Kuper, J.T., Peeters, T.M.J., and Esselink, J.

Abstract

International Peat Symposium on Peat in Horticulture—Quality and Environmental Challenges. P¨arnu, Estonia, September 3–6. International Peat Society, Jyv ¨askyl ¨ a, Finlan, Item does not contain fulltext

Published
2002

12. Important keys to successful restoration of characteristic aquatic macroinvertebrate fauna of raised bogs

Author

Schmilewski, G., Rochefort, L., Duinen, G.A. van, Brock, A.M.T., Kuper, J.T., Peeters, T.M.J., Smits, M.J.A., Verberk, W.C.E.P., Esselink, J., Schmilewski, G., Rochefort, L., Duinen, G.A. van, Brock, A.M.T., Kuper, J.T., Peeters, T.M.J., Smits, M.J.A., Verberk, W.C.E.P., and Esselink, J.

Abstract

Pärnu 2002 Peat in Horticulture Symposium – IPS Commision V: Peatland restoration, Contains fulltext : 176145.pdf (publisher's version ) (Open Access)

Published
2002

17. The role of peat in assuring the quality of growing media.

Author

Schmilewski, G.

Abstract

Producers and users of growing media are exposed to high risk if significant quantities of potentially unsuitable ingredients are included in the product. Combined with economic reasoning, this dictates that the constituents of growing media should possess as many suitable characteristics as possible. Sphagnum peat has been the most important growing medium constituent for many decades because its properties are the best available. The use of other organic and mineral-organic materials is being forced ahead by research and development against a background of public favour for peat replacement, recycling and re-use of biodegradable waste. Considerably more resources have been invested in the testing of peat alternatives than in peat itself during recent years, and the utility of a large number of alternatives has been assessed. Most candidate materials are only slightly or not at all suitable for use in growing media. The exceptions are composts, wood fibre products, bark and composted bark, and coir. These have become established, to a greater or lesser degree, as reliable substrate constituents. Their manufacture, characteristics, advantages and disadvantages are reviewed. A continuing need for peat as a constituent of growing media, at least for dilution purposes, is foreseen. Thus, increased imports of peat and growing media to countries with intensive or expanding commercial horticulture and inadequate domestic peat reserves are to be expected in the future. [ABSTRACT FROM AUTHOR]

Published
2008

20. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences.

Author

Wijedasa LS, Jauhiainen J, Könönen M, Lampela M, Vasander H, Leblanc MC, Evers S, Smith TE, Yule CM, Varkkey H, Lupascu M, Parish F, Singleton I, Clements GR, Aziz SA, Harrison ME, Cheyne S, Anshari GZ, Meijaard E, Goldstein JE, Waldron S, Hergoualc'h K, Dommain R, Frolking S, Evans CD, Posa MR, Glaser PH, Suryadiputra N, Lubis R, Santika T, Padfield R, Kurnianto S, Hadisiswoyo P, Lim TW, Page SE, Gauci V, Van Der Meer PJ, Buckland H, Garnier F, Samuel MK, Choo LN, O'Reilly P, Warren M, Suksuwan S, Sumarga E, Jain A, Laurance WF, Couwenberg J, Joosten H, Vernimmen R, Hooijer A, Malins C, Cochrane MA, Perumal B, Siegert F, Peh KS, Comeau LP, Verchot L, Harvey CF, Cobb A, Jaafar Z, Wösten H, Manuri S, Müller M, Giesen W, Phelps J, Yong DL, Silvius M, Wedeux BM, Hoyt A, Osaki M, Hirano T, Takahashi H, Kohyama TS, Haraguchi A, Nugroho NP, Coomes DA, Quoi LP, Dohong A, Gunawan H, Gaveau DL, Langner A, Lim FK, Edwards DP, Giam X, Van Der Werf G, Carmenta R, Verwer CC, Gibson L, Gandois L, Graham LL, Regalino J, Wich SA, Rieley J, Kettridge N, Brown C, Pirard R, Moore S, Capilla BR, Ballhorn U, Ho HC, Hoscilo A, Lohberger S, Evans TA, Yulianti N, Blackham G, Onrizal, Husson S, Murdiyarso D, Pangala S, Cole LE, Tacconi L, Segah H, Tonoto P, Lee JS, Schmilewski G, Wulffraat S, Putra EI, Cattau ME, Clymo RS, Morrison R, Mujahid A, Miettinen J, Liew SC, Valpola S, Wilson D, D'Arcy L, Gerding M, Sundari S, Thornton SA, Kalisz B, Chapman SJ, Su AS, Basuki I, Itoh M, Traeholt C, Sloan S, Sayok AK, and Andersen R

Published
2017
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