Wellington's Lost Streams: ecosystem regeneration supporting urban agriculture using architecture

<p>Wellington's piped streams and harbour are both heavily polluted by land-based activities. Riparian zones around urban streams are almost non-existent, and native ecosystems are suffering or have been completely removed. These issues are to be engaged through architectural design focusing on ecosystem regeneration, cross-programmed with public infrastructure, and urban agriculture. Natural habitat in Aotearoa has dramatically diminished since European colonisation and continues to suffer significantly from the expansion of the built environment and farmland. The ideas that this design-based research explores is the incorporation of living-systems to aid in regeneration of native species and habitat, and prevent water pollution within urban contexts. The addition of permaculture practices will also be explored for its role in supporting civic life alongside public interaction through socially active design. Through these ideas, the goal is to create a network of architectural interventions that define a model of living which is regenerative to the environment. This would work towards people and nature coexisting in symbiotic relationships within urban centres.</p>

Wellington's Lost Streams: ecosystem regeneration supporting urban agriculture using architecture

<p>Wellington's piped streams and harbour are both heavily polluted by land-based activities. Riparian zones around urban streams are almost non-existent, and native ecosystems are suffering or have been completely removed. These issues are to be engaged through architectural design focusing on ecosystem regeneration, cross-programmed with public infrastructure, and urban agriculture. Natural habitat in Aotearoa has dramatically diminished since European colonisation and continues to suffer significantly from the expansion of the built environment and farmland. The ideas that this design-based research explores is the incorporation of living-systems to aid in regeneration of native species and habitat, and prevent water pollution within urban contexts. The addition of permaculture practices will also be explored for its role in supporting civic life alongside public interaction through socially active design. Through these ideas, the goal is to create a network of architectural interventions that define a model of living which is regenerative to the environment. This would work towards people and nature coexisting in symbiotic relationships within urban centres.</p>

Identifikasi Potensi Permudaan Alam Di Hutan Rawa Gambut Taman Hutan Raya Orang Kayo Hitam Provinsi Jambi Pasca Kebakaran Hutan

AbstrakRegenerasi dan restorasi hutan rawa gambut merupakan hal yang sulit terjadi secara alami. Restorasi ekosistem bukan hanya membuat tegakan baru tetapi juga harus berbasis keanekaragaman hayati lokal untuk membuat peluang berhasilnya menjadi lebih tinggi. Tujuan dari penelitian ini adalah mendapatkan data mengenai potensi permudaan alam dalam rangka regenerasi dan restorasi lahan gambut di Tahura Orang Kayo Hitam pasca kebakaran hutan. Penelitian ini dilaksanakan selama 7 bulan, yaitu dari Maret sampai Oktober 2019 di Tahura Orang Kayo Hitam, Herbarium Fakultas Kehutanan Universitas Jambi dan Laboratorium Silvikultur dan Manajemen Universitas Jambi. Metode yang digunakan adalah kombinasi transek dengan garis berpetak. Hasil penelitian menunjukkan bahwa terdapat 29 jenis anakan alam yang tergabung dalam 19 famili tumbuhan. Jenis yang paling dominan adalah arang-arang (Diospyros mangiayi) diikuti oleh meranti bunga (Shorea teijsmanniana) dengan Indeks Nilai Penting (INP) berturut-turut sebesar 20,10% dan 19,33%. Indeks kekayaan Margaleff D= 4,88, indeks keanekaragaman Shannon-Wiener H’= 2,96 dan indeks Evennes E= 0,88. Nilai dari semua indeks menunjukkan kondisi permudaan alam yang cukup baik di Tahura Orang Kayo Hitam. Hal ini diharapkan mampu menjadi pendorong dalam restorasi ekosistem yang berbasis jenis lokal untuk masa depan hutan rawa gambut. Abstract Regeneration and restoration of peat swamp forests is a difficult thing to happen naturally. Ecosystem regeneration and restoration not only create new stands but must also be based on local biodiversity to make the chances of success even higher. The purpose of this study is to obtain data and information about the potential of seedlings for the regeneration and restoration of peatlands in Tahura Orang Kayo Hitam after forest fires. This research was conducted for 7 months from March to October 2019 with locations in Orang Kayo Hitam Tahura, Herbarium of the Faculty of Forestry at the University of Jambi and the University of Jambi's Silviculture and Management Laboratory. The most dominant types are arang-arang (Diospyros mangiayi) followed by meranti bunga (Shorea teijsmanniana) with Important Value Index (INP) respectively of 20.10% and 19.33%. Margaleff's Wealth Index D= 4, 88. The Shannon-Wiener Diversity Index shows a value of H 'of 2.96 and the Index of Evennes indicates a value of E= 0.88. The values obtained from all of the measured indices indicate the condition of natural regeneration which is quite good in Tahura Orang Kayo Hitam. This is expected to lead to local species-based ecosystem restoration for the future of peat swamp forests.

Evaluation of pre-germination treatments in Carapa guianensis AUBL

Understanding seed germination of native forest species of the Tropical wet forest is essential for ecosystem regeneration and conservation, which have been affected by the exploitation of wood and non-wood forest products. Carapa guianensis Aulb. (Meliaceae) has been exploited due to the high quality of its wood and seeds. Particularly, the latter is a source of a medicinal oil of high value to the pharmaceutical industry. The indiscriminate use of this species has reduced its population size; therefore, scientific knowledge of its sexual propagation in nurseries is vital. This research aimed to evaluate seed germination of C. guianensis under different pre-germination treatments and substrates at the Centro de Investigación El Mira of AGROSAVIA. Pre-germination assays were conducted in a split-plot design with a random distribution of four repetitions. The cumulative germination percentage (CGP) and mean germination time (t50) were calculated and analyzed through an ANOVA, and Tukey’s multiple comparison test using InfoStat V.2016. Significant differences for CGP among treatments (p<0.0001) and interactions (p<0.0096) were found. The highest germination percentage (61%) was achieved in S1+T4; however, the T50 did not show significant differences (p=0.24). This research demonstrates that the highest germination percentage is achieved through a scarification treatment with imbibition in sand substrate under the agroclimatic conditions of Tumaco.

Agricultura, recursos naturales, medio ambiente y desarrollo sostenible en Costa Rica.

The sustainable agriculture in Costa Rica must recognize the need of intensifying the productivity as a way to support the increasing demand created by the population growth, but at the same time it has to prevent the best use and conservation of the natural resources. Without natural resources there is no agriculture and without it there isn’t food support. It’s hoped that Costa Rica can satisfy the growing demand of food and other agriculture products; avoiding the fast process of degradation that our soils and forest are suffering. The sustainable agriculture process in Costa Rica and other countries of the region presents an increasing demand of land and natural resources; which causes social, economic and ecological conflicts and competence. This is why Costa Rica must organize a strategy of sustainable development that contemplates the effects of the demographic growth, food support, biodiversity protection, ecosystem regeneration, development of friendly technologies with the environment, regulation on the use of natural resources and the formation of better thought human beings.