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"Seeds of sustainable agriculture is a groundbreaking analysis of agricultural development and transitions toward more sustainable management in one region. It examines new approaches to make agricultural landscapes healthier for both the environment and people. The Yaqui Valley is one of the most intensive agricultural regions of the world. It also faces resource limitations, threats to human health, and rapidly changing economic conditions. "

"Pencemaran mikroplastik di seluruh bagian lautan telah menjadi masalah global. Tujuan dari penelitian ini adalah untuk mengetahui jumlah dan bentuk mikroplastik yang terdapat pada ikan teri (Stolephorus indicus) dan ikan gulamo (Johnius belangerii) di perairan Muara Sungai Musi, Sumatera Selatan, Indonesia. Penelitian ini terdiri dari empat stasiun: 12 sampel ikan teri dan ikan gulamo diambil dari setiap stasiun melalui hasil tengkapan nelayan dengan menggunakan jaring. Untuk degradasi bahan organik dan deteksi partikel mikrolastik, baik yang berada di ikan teri dan ikan gulamo (pada bagian insang dan pencernaan) dilakukan dengan menggunakan hidrogen peroksida, kemudian dilakukan penambahan NaCl untuk memisahkan bahan organik dari mikroplastik sehingga dapat dilihat lebih jelas. Hasil penelitian menunjukkan adanya 3 jenis partikel mikrolastik yang ditemukan pada ikan teri dan ikan gulamo; fiber, merupakan jenis yang paling banyak ditemukan (91.54% pada ikan teri; 97.87% pada ikan gulamo), kemudian film (5.03% pada ikan teri dan 1,6% pada ikan gulamo), dan fragmen (3,43% pada ikan teri dan 0,53% pada ikan gulamo). Kelimpahan mikroplastik terbesar pada ikan teri ditemukan di stasiun 4 dengan 141±6,42 partikel/ind dan 828 partikel/g. stasiun 4 juga menjadi tempat dimana ditemukan kelimpahan mikroplastik terbesar pada ikan gulamo dengan jumlah 422±6.03 partikel/ind dan 111 mikroplastik/g. Analisis statistk deskriptif dilakukan dengan menggunakan uji Spearmanndan uji Kruskal – Wallis. Hasil Uji Spearman menunjukkan tidak adanya hubungan antara kelimpahan mikroplastik pada ikan teri dengan massa tubuh, sedangkan pada gulamo ditemukan adanya hubungan kelimpahan mikroplastik terhadap berat badan dengan sifat berbanding lurus. Hasil Uji Kruskall-Wallis menunjukkan tidak adanya perbedaan jumlah partikel mikroplastik yang signifikan pada ikan teri, sedangkan gulamo memiliki perbedaan yang signifikan pada jumlah partikel mikroplastik.

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Microplastic pollution in all parts of the ocean has become a global problem; therefore, we aimed to determine the amount and form of microplastics found in anchovies (Stolephorus indicus) and Gulamo (Johnius belangerii) in the mouth of the Musi River, South Sumatra, Indonesia. This study consisted of four stations: 12 anchovy and gulamo samples were collected from fishermen catches using fishing nets. To degrade organic matter and enable detection of microplastic particles, both anchovy and gulamo gastrointestinal contents and gills were subjected to hydrogen peroxide digestion, followed by the addition of NaCl to separate the organic matter from microplastics so can be see more clearly. There were 3 types of microplastics were found in anchovies and gulamos: fiber, the most common type (91,54% in anchovies; 97,87% in gulamos), followed by films (5,03% in anchovies; 1,6% in gulamos) and fragments (3,43% in anchovies; 0,53% in gulamos). In anchovies, the greatest abundance of microplastics was observed at station 4 with 141±6.42 particles/individual and 828 particles/g. In Gulamo, a large abundance of microplastics was found at station 4 with 422±6.03 particles/individual and 111 microplastics/g. Descriptive statistical analysis was performed using withe Spearman test and the Kruskal-Wallis test. The Spearmaan test showed no correlation between anchovy and body mass, whereas in gulamo, the correlation to body weight was directly proportional. The Kruskall-Wallis test showed no significant difference in the number of microplastic particles in anchovies, whereas the gulamo had a significant difference"

"Soil loss and its transport processes were coupled with an existing distributed hydrological modelto assess the effects of land use change on stream flow and suspended sediment load in the ChaoPhraya River basin, Thailand. The simulation period spanned from 2001 to 2010. The resultsindicate that the Nash-Sutcliffe efficiency of upper sub-basins fluctuated in the range 0.51- 0.72,indicating the applicability of the model for longterm simulation at the monthly scale. Land usechange during 200l-2010 caused a 1.6% increase in suspended sediment load based on the presenttrend. The changes were particularly pronounced in the Wang River basin, where the delivery ratiowas highest. Moreover, the urbanization and conversion of farm land from paddy fields exertednegative effects on sediment runoff in Chao Phraya River basin. The proposed model has theability to quantitatively evaluate the heterogeneity of sediment runoff in the basin, demonstratingthe benefits and trade-offs of each land use change class. The results of this study can support basinand local land development policy to control sediment losses during development."

"Heavy metals in suspended sediments (SS) were investigated in the lower Chao Phraya River,Thailand, and Main particulate metals. The particulate fractions accounted mostly for 60-100% of total concentrations of Cr, Mn, Ni, Cu, Zn, and Pb in both dry and rainy seasons. The comparison of metal contents of the sampled SS and upper continental crust (UCC) implied some anthropogenic inputs of Cr, Ni,Cu, and Zn as well as the dilution process for those metals in the rainy season in Chao Phraya River. Enrichment factor in both rivers also indicated anthropogenic effects on metal content in SS,reflecting the distinctive seasonal process in Chao Phraya River and the spatial variation withinMaxil."

"The large market size and abundant resources of the Greater Mekong Subregion (GMS), including a large, motivated and cheap workforce, a rich agricultural base, extensive timber and fisheries resources, considerable potential mineral resources, and vast energy resources have seen the subregion increasingly recognized as a new frontier of Southeast Asian economic strength. This book aims to assess the recent economic, social and political developments in the GMS and identify emerging opportunities and challenges facing the successful transition towards a market-driven economy."