The Biogeochemical Context of Marine Planktonic Ecosystems

Ramı́rez, Teodoro; Muñoz, M.; Reul, Andreas; García-Martínez, M.C.; Moyá, Francina; Vargas‐Yáñez, Manuel; Bautista, Begoña

doi:10.1007/978-3-030-65516-7_7

Cited by 4 publications

(3 citation statements)

References 154 publications

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“…This indicates lower water transparency in the northwestern Alboran Sea compared to other Mediterranean areas, as has also been detected in the adjacent Gulf of Cádiz. Moreover, the analyzed P. oceanica meadows are located in one of the highest biological productivity areas within the Mediterranean [61,62], which may also induce low water transparency. This was reflected in the low irradiance values obtained at a depth of 4-5 m at the Calahonda SAC, which are similar to those found at a depth of 10 m in the eastern Adriatic Sea [50].…”

Section: Discussionmentioning

confidence: 99%

Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

Mateo-Ramírez

Marina

Martín-Arjona

et al. 2023

Oceans

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Meadows of the seagrass Posidonia oceanica inhabit most infralittoral bottoms of the Mediterranean Sea and are considered one of the main climax stages of the infralittoral environment. This seagrass has its western distributional limit along the coast of the Alboran Sea. Taking into account the decline of P. oceanica meadows and the global scenario of ocean warming, it becomes essential to know the structure, temporal dynamics, sexual reproduction and conservation status of this seagrass, across its geographical distribution, including the distribution boundaries where the meadows withstand limiting environmental conditions. In the present work, we studied the structure, phenology and flowering events of four P. oceanica meadows located in the northwestern Alboran Sea (close to the Strait of Gibraltar). Results indicate a decreasing trend of patch size, bathymetric range and number of leaves per shoot towards the Strait (and the Atlantic Ocean), as well as an increasing trend of shoot density and leaf height. Phenological parameters of the northwestern Alboran Sea P. oceanica meadows presented temporal dynamics similar to meadows from other locations within the biogeographical distribution of this seagrass, with similar or even less annual variability in the former. Although most of the studied P. oceanica meadows seem to present a good health status (BiPo index ~0.6) with high shoot densities and some flowering events, some of them showed evidence of regression.

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Section: Discussionmentioning

confidence: 99%

Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

Mateo-Ramírez

Marina

Martín-Arjona

et al. 2023

Oceans

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“…The ocean color (OC) is determined by the concentration of the phytoplankton, organic materials, and sediments, as well as anthropogenic materials such as sewages and fertilizers, which provide a nutrient base for organisms in the coastal ocean (e.g., [136,[144][145][146][147]). It is therefore a key variable to investigate the primary productivity in the upper layers of the coastal zones, together with the phenomena such as the mesoscale eddies (circular currents on the ocean spanning 10 to 100 km in diameter, which persist from a few days up to months), fronts (boundaries between distinct water masses), upwellings (where deep cold water rises to the surface), and internal waves (e.g., [148][149][150][151][152]).…”

Section: Ocean Colormentioning

confidence: 99%

A New Orbiting Deployable System for Small Satellite Observations for Ecology and Earth Observation

et al. 2022

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In this paper, we present several study cases focused on marine, oceanographic, and atmospheric environments, which would greatly benefit from the use of a deployable system for small satellite observations. As opposed to the large standard ones, small satellites have become an effective and affordable alternative access to space, owing to their lower costs, innovative design and technology, and higher revisiting times, when launched in a constellation configuration. One of the biggest challenges is created by the small satellite instrumentation working in the visible (VIS), infrared (IR), and microwave (MW) spectral ranges, for which the resolution of the acquired data depends on the physical dimension of the telescope and the antenna collecting the signal. In this respect, a deployable payload, fitting the limited size and mass imposed by the small satellite architecture, once unfolded in space, can reach performances similar to those of larger satellites. In this study, we show how ecology and Earth Observations can benefit from data acquired by small satellites, and how they can be further improved thanks to deployable payloads. We focus on DORA—Deployable Optics for Remote sensing Applications—in the VIS to TIR spectral range, and on a planned application in the MW spectral range, and we carry out a radiometric analysis to verify its performances for Earth Observation studies.

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“…On one side, phytoplanktonic blooms have been associated to turbidity plumes in the Gulf of Cadiz (Caballero et al, 2014), and the primary productivity of the waters surrounding the Guadalquivir river plays a fundamental role in the anchovy fishery in this area (Ruiz et al, 2006). In the case of the Alboran Sea, Ramírez et al (2021) have described several mechanisms capable of supplying nutrients to the photic layer in the northern Alboran Sea, sustaining a primary productivity higher than that of other Mediterranean regions (García-Martínez et al, 2019a, 2019b. These two regions, connected by the Strait of Gibraltar, have very energetic dynamics that modulate phytoplanktonic populations.…”

Section: Introductionmentioning

confidence: 99%

A Method to Establish Marine Bio-Regions in the Pelagic Ecosystem Based on Phytoplanktonic Communities. Aplication to the Southern Spanish Coast

Vargas-Yáñez,

Reeves-Bueno,

Fernández-Topham

et al. 2023

Preprint

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The Biogeochemical Context of Marine Planktonic Ecosystems

Cited by 4 publications

References 154 publications

Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

Posidonia oceanica (L.) Delile at Its Westernmost Biogeographical Limit (Northwestern Alboran Sea): Meadow Features and Plant Phenology

A New Orbiting Deployable System for Small Satellite Observations for Ecology and Earth Observation

A Method to Establish Marine Bio-Regions in the Pelagic Ecosystem Based on Phytoplanktonic Communities. Aplication to the Southern Spanish Coast

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