Aquatic invasive species: challenges for the future

Havel, John E.; Kovalenko, Katya E.; Thomaz, Sidinei Magela; Amalfitano, Stefano; Kats, Lee B.

doi:10.1007/s10750-014-2166-0

Cited by 480 publications

(304 citation statements)

References 204 publications

(237 reference statements)

Supporting

Mentioning

296

Contrasting

Unclassified

Order By: Relevance

“…These plants are also important since they are a source of oxygen, provide food, shade and cover for fish and other aquatic organisms. However, freshwater ecosystems seem to be at particular risk from invasive plant species because of threats to biodiversity [11] and human needs for water resources [12]. In India too, many aquatic bodies including rivers, lakes, ponds and canals are now fully covered by excessive growth of invasive plants [13], which if left unchecked become extremely difficult to control.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Jha¹,

Samal²,

Santra³

et al. 2016

AJPS

View full text Add to dashboard Cite

Freshwaters are not only used locally in many developing countries but they are often over exploited for domestic purposes, agriculture and disposal of industrial wastes which result in an overload of excess nutrients, harmful chemicals and heavy metals. Plant species together with sediments and water samples collected from eleven aquatic water bodies in the vicinity of industrial units in Kolkata were studied for their potential to uptake Pb, Cd and Cr under field conditions. Cd and Cr concentrations in the sediments were higher than background values considered to be toxic.Alternanthera philoxeroides and Eichhornia crassipes were the two invasive species present, with the former being more widely distributed. Among native plants, Ipomoea aquatica was the most abundant. Metal uptake in the plants differed among species, tissues and sites. Pb and Cd accumulation in root tissues for all plants in most sites suggested an exclusion strategy for metal tolerance. Since I. aquatica is widely consumed in many parts of SE Asia, its metal content should be checked before use since it was found to efficiently translocate both Pb and Cd from roots to shoots.The potential of A. philoxeroides as a metal excluder needs to be explored further since it translocates less to its shoots as compared to E. crassipes and I. aquatica.

show abstract

Section: Introductionmentioning

confidence: 99%

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Jha¹,

Samal²,

Santra³

et al. 2016

AJPS

View full text Add to dashboard Cite

show abstract

“…Air memfasilitasi atau memudahkan keong mas bermigrasi. Menurut Havel et al, 2015), keberadaan waduk dapat menjadi sarana yang menyediakan air untuk memudahkan suatu spesies air invasif (AIS=Aquatic Invasive Spesies) menginvasi suatu daerah baru.…”

Section: Metode Penelitianunclassified

Daya Makan, Diapause Dan Mobilitas Keong Mas (Pomacea Canaliculata) Pada Berbagai Kedalaman Air

Bunga¹,

Wagiman²,

Witjaksono³

et al. 2017

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

View full text Add to dashboard Cite

Feeding rate, aestivation and mobility of golden snails (Pomacea canaliculata) at different depths of water. The research was studied in Malaka District, East Nusa Tenggara Province, during the dry and the rainy season (October 2014 -March 2015. Studies on capacity of damage to the Ciherang rice seedlings were carried out for three weeks. The size of snails used in this experiment was 11-20; 21-30; and 31-40 mm. The numbers of seedlings that were planted were 3, 6, 9, 12, 15, 18 and 21 seeds. The treatments were repeated 5 times. The numbers of seeds which are damaged by the snails then were tabulated and analyzed. Snails with the size of 11-20 mm damaged the seeds in 31.67%, followed by snails with the size of 21-30 mm and 31-40 mm with potency of damaging were 64.76% and 97.38%, respectively. The size of snails affects the level of damage to rice seedlings when transplanting. Study about aestivation was conducted in five villages, namely Kamanasa, Wehali, Umakatahan, Harekakae and Kletek when the rice fields were fallow. The observation point was observed at the corner of the dike and along the dike, evaluated every 10 meters away. The results showed snails aestivate when the fields were dry. Studies on snail's mobility conducted on the experiment arena on the mud in buckets, which planted with 20 paddy seedlings. The treatment depth of puddles in the experiment were without puddles, half, the same height and twice the height of snails shell. The treatments were repeated 10 times. Measurement of snail's mobility was performed routinely every 2 hours, observed from the beginning when the snails were placed for 24 hours in advance. The results showed that the depth of the water significantly affected the mobility of snails. Without puddles, the mobility of snails was severely hampered in the mud. The mobility of the juvenile was significantly higher than the imago. The implication of this study was benefit to that the regulating the level of water in the paddy field which is known as an appropriate effective technology and for controlling the attack of the golden snails. Key words: aestivation, feeding rate, mobility, paddy, Pomacea canaliculata ABSTRAK Daya merusak, diapause dan mobilitas keong mas (Pomacea canaliculata) pada berbagai kedalaman air. Penelitian dilaksanakan di Kabupaten Malaka, Provinsi Nusa Tenggara Timur selama musim kemarau dan musim penghujan (Oktober 2014 -Maret 2015. Kajian daya makan keong mas dilakukan terhadap bibit padi varietas Ciherang berumur tiga minggu. Keong mas uji berukuran 11-20 mm, 21-30 mm dan 31-40 mm. Jumlah bibit dalam perlakuan 3, 6, 9, 12, 15, 18 dan 21 bibit, diulang 5 kali. Banyaknya bibit yang dirusak oleh keong mas ditabulasi dan dianalisis. Keong mas ukuran 11-20 mm merusak bibit 31,67%, ukuran 21-30 mm merusak 64,76% dan ukuran 31-40 mm merusak 97,38%. Ukuran keong mas berpengaruh terhadap tingkat kerusakan bibit padi pada saat pindah tanam. Kajian diapause keong mas dilakukan di lima desa yaitu Desa Kamanasa, Wehali, Umakatahan, Harekakae dan Kletek, sa...

show abstract

“…In assessments of the socioeconomic and environmental impact of these plants (Bonanno, 2016;Havel, Kovalenko, Thomaz, Amalfitano, & Kats, 2015), it is necessary to consider not just the negative impacts, but also the positive impacts of invasive macrophytes for developing conservation, management and policy strategies (Chapman, 2016;Sax et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

et al. 2018

View full text Add to dashboard Cite

Different functional groups of macrophytes vary in their impact on aquatic ecosystem structure and processes. The introduction of new species with different growth form, combined with a stochastic event, may have serious and irreversible consequences on lake functioning. Our goals were to document and explain physical, chemical, metabolic and biotic changes in the littoral zones of a volcanic lake before and following two coinciding events: invasion by a submersed macrophyte, Hydrilla verticillata (Hydrocharitaceae), followed by a rapid increase in the lake water level (>2.5 m). We recorded plant biomass, plant tissue C:N:P stoichiometry, macroinvertebrates, water characteristics data along transects through littoral zones, and measured gas emission in controlled mesocosms and in the lake. The native emergent species, Schoenoplectus californicus (Cyperaceae), was generally not able to survive such a rapid water level increase, and Hydrilla spread and formed dense mats further preventing Schoenoplectus regeneration. The impact of another introduced species, the free‐floating Eichhornia crassipes (Pontederiaceae), was more localised, despite its much longer presence at the lake. Although the three species had comparable standing biomass, the two invader species had lower C:N:P ratios than Schoenoplectus, resulting in faster decomposition rates and indicating potential shifts in nutrient cycling within the ecosystem. The oxygen profile of the water column was altered by the non‐native species in a significantly different manner: in Eichhornia, the saturation concentrations dropped down to 30%–50% of dissolved oxygen, while oxygen supersaturation was recorded in Hydrilla. Both Schoenoplectus and Eichhornia patches exhibited comparable carbon dioxide (CO2) fluxes, sequestering 230 and 300 mg CO2 m−2 hr−1, respectively, during the day and emitting 250 and 200 mg CO2 m−2 hr−1, respectively, during the night. Contrary to these two species, Hydrilla patches sequestered CO2 during the day (34 mg CO2 m−2 hr−1) and night (44 mg CO2 m−2 hr−1). The invasive species maintained a richer community of macroinvertebrates compared to several native species (excluding Schoenoplectus), both in taxa diversity and in numbers of individuals. When the results are considered in the regional context, an increase in nutrient supply could lead to the dominance of free‐floating plants. We discussed management options more broadly considering the negative impacts of introduced species balanced against their beneficial effects, in the context of environmental changes.

show abstract

Aquatic invasive species: challenges for the future

Cited by 480 publications

References 204 publications

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Daya Makan, Diapause Dan Mobilitas Keong Mas (Pomacea Canaliculata) Pada Berbagai Kedalaman Air

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

Contact Info

Product

Resources

About